12895972920 has 48 divisors (see below), whose sum is σ = 41911913160. Its totient is φ = 3438926016.

The previous prime is 12895972913. The next prime is 12895972927. The reversal of 12895972920 is 2927959821.

12895972920 is a `hidden beast` number, since 1 + 2 + 8 + 9 + 597 + 29 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (12895972913) and next prime (12895972927).

It is a super-2 number, since 2×12895972920² (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 (12895972927) 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, 17910714 + ... + 17911433.

Almost surely, 2^12895972920 is an apocalyptic number.

12895972920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12895972920 is an abundant number, since it is smaller than the sum of its proper divisors (29015940240).

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

12895972920 is a wasteful number, since it uses less digits than its factorization.

12895972920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35822164 (or 35822157 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 12895972920 in words is "twelve billion, eight hundred ninety-five million, nine hundred seventy-two thousand, nine hundred twenty".