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12990980889 = 321997253479
BaseRepresentation
bin11000001100101001…
…01010001100011001
31020112100211012120100
430012110222030121
5203101142342024
65545025450013
7636633341565
oct140624521431
936470735510
1012990980889
115567085247
1226267a0909
1312c0564753
148b349c6a5
1551076e7c9
hex30652a319

12990980889 has 12 divisors (see below), whose sum is σ = 18859048000. Its totient is φ = 8617131864.

The previous prime is 12990980887. The next prime is 12990980921. The reversal of 12990980889 is 98808909921.

It is not a de Polignac number, because 12990980889 - 21 = 12990980887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12990980881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3624949 + ... + 3628530.

Almost surely, 212990980889 is an apocalyptic number.

It is an amenable number.

12990980889 is a deficient number, since it is larger than the sum of its proper divisors (5868067111).

12990980889 is a wasteful number, since it uses less digits than its factorization.

12990980889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253684 (or 7253681 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 63.

The spelling of 12990980889 in words is "twelve billion, nine hundred ninety million, nine hundred eighty thousand, eight hundred eighty-nine".

Divisors: 1 3 9 199 597 1791 7253479 21760437 65281311 1443442321 4330326963 12990980889