12869122356 has 18 divisors (see below), whose sum is σ = 32530281602. Its totient is φ = 4289707440.

The previous prime is 12869122333. The next prime is 12869122367. The reversal of 12869122356 is 65322196821.

12869122356 is a `hidden beast` number, since 1 + 286 + 9 + 12 + 2 + 356 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9936899856 + 2932222500 = 99684^2 + 54150^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12869122356² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178737775 + ... + 178737846.

Almost surely, 2^12869122356 is an apocalyptic number.

It is an amenable number.

12869122356 is an abundant number, since it is smaller than the sum of its proper divisors (19661159246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12869122356 is a wasteful number, since it uses less digits than its factorization.

12869122356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357475631 (or 357475626 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 12869122356 in words is "twelve billion, eight hundred sixty-nine million, one hundred twenty-two thousand, three hundred fifty-six".