12811987260 has 72 divisors (see below), whose sum is σ = 39077840256. Its totient is φ = 3397645440.

The previous prime is 12811987247. The next prime is 12811987273. The reversal of 12811987260 is 6278911821.

It is an interprime number because it is at equal distance from previous prime (12811987247) and next prime (12811987273).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164044 + ... + 229203.

Almost surely, 2^12811987260 is an apocalyptic number.

12811987260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12811987260 is an abundant number, since it is smaller than the sum of its proper divisors (26265852996).

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

12811987260 is a wasteful number, since it uses less digits than its factorization.

12811987260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393443 (or 393438 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 12811987260 in words is "twelve billion, eight hundred eleven million, nine hundred eighty-seven thousand, two hundred sixty".