12811254612 has 24 divisors (see below), whose sum is σ = 32192383776. Its totient is φ = 3941924448.

The previous prime is 12811254581. The next prime is 12811254623. The reversal of 12811254612 is 21645211821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41061558 + ... + 41061869.

It is an arithmetic number, because the mean of its divisors is an integer number (1341349324).

Almost surely, 2^12811254612 is an apocalyptic number.

12811254612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12811254612 is an abundant number, since it is smaller than the sum of its proper divisors (19381129164).

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

12811254612 is a wasteful number, since it uses less digits than its factorization.

12811254612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82123447 (or 82123445 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The spelling of 12811254612 in words is "twelve billion, eight hundred eleven million, two hundred fifty-four thousand, six hundred twelve".