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12902830386601 = 41279211092
BaseRepresentation
bin1011101111000010110010…
…0111110010110110101001
31200200111110102201201112011
42323300230213302312221
53142344444034332401
643235251202315521
72501125110460021
oct273605447626651
950614412651464
1012902830386601
114125072416a81
1215447a3958ba1
13727968684b5c
14328700c58a81
15175973b8a451
hexbbc2c9f2da9

12902830386601 has 27 divisors (see below), whose sum is σ = 13406825153253. Its totient is φ = 12417576624960.

The previous prime is 12902830386583. The next prime is 12902830386623. The reversal of 12902830386601 is 10668303820921.

The square root of 12902830386601 is 3592051.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11395681311001 + 1507149075600 = 3375749^2 + 1227660^2 .

It is not a de Polignac number, because 12902830386601 - 27 = 12902830386473 is a prime.

It is a super-2 number, since 2×129028303866012 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12902830336601) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11634652635 + ... + 11634653743.

Almost surely, 212902830386601 is an apocalyptic number.

12902830386601 is the 3592051-st square number.

12902830386601 is the 1796026-th centered octagonal number.

It is an amenable number.

12902830386601 is a deficient number, since it is larger than the sum of its proper divisors (503994766652).

12902830386601 is an frugal number, since it uses more digits than its factorization.

12902830386601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

Multiplying 12902830386601 by its sum of digits (49), we get a square (632238688943449 = 251443572).

The spelling of 12902830386601 in words is "twelve trillion, nine hundred two billion, eight hundred thirty million, three hundred eighty-six thousand, six hundred one".

Divisors: 1 41 79 1109 1681 3239 6241 45469 87611 132799 255881 1229881 1864229 3592051 6921269 10491121 50425121 97160599 147274091 283772029 2067429961 3983584559 7675687321 11634653189 163326966919 314703180161 12902830386601