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12493702887 = 3191160113619
BaseRepresentation
bin10111010001010111…
…01100011011100111
31012020201002212101120
423220223230123213
5201041341443022
65423423225023
7621414502521
oct135053543347
935221085346
1012493702887
115331407996
122508148173
131241523603
14867414a11
154d1c92d5c
hex2e8aec6e7

12493702887 has 16 divisors (see below), whose sum is σ = 16757176320. Its totient is φ = 8279744000.

The previous prime is 12493702853. The next prime is 12493702891. The reversal of 12493702887 is 78820739421.

It is a cyclic number.

It is not a de Polignac number, because 12493702887 - 211 = 12493700839 is a prime.

It is a super-2 number, since 2×124937028872 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12493702387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910564 + ... + 924182.

It is an arithmetic number, because the mean of its divisors is an integer number (1047323520).

Almost surely, 212493702887 is an apocalyptic number.

12493702887 is a deficient number, since it is larger than the sum of its proper divisors (4263473433).

12493702887 is a wasteful number, since it uses less digits than its factorization.

12493702887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15414.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 12493702887 in words is "twelve billion, four hundred ninety-three million, seven hundred two thousand, eight hundred eighty-seven".

Divisors: 1 3 191 573 1601 4803 13619 40857 305791 917373 2601229 7803687 21804019 65412057 4164567629 12493702887