12864085551 has 20 divisors (see below), whose sum is σ = 19219798752. Its totient is φ = 8574683328.

The previous prime is 12864085523. The next prime is 12864085561. The reversal of 12864085551 is 15558046821.

12864085551 is a `hidden beast` number, since 12 + 8 + 6 + 4 + 0 + 85 + 551 = 666.

It is not a de Polignac number, because 12864085551 - 2²³ = 12855696943 is a prime.

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 junction number, because it is equal to n+sod(n) for n = 12864085497 and 12864085506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864085501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 883210 + ... + 897656.

Almost surely, 2^12864085551 is an apocalyptic number.

12864085551 is a deficient number, since it is larger than the sum of its proper divisors (6355713201).

12864085551 is a wasteful number, since it uses less digits than its factorization.

12864085551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25452 (or 25443 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 12864085551 in words is "twelve billion, eight hundred sixty-four million, eighty-five thousand, five hundred fifty-one".