12797912512 has 252 divisors, whose sum is σ = 33620522040. Its totient is φ = 4810122240.

The previous prime is 12797912429. The next prime is 12797912521. The reversal of 12797912512 is 21521979721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11003643 + ... + 11004805.

It is an arithmetic number, because the mean of its divisors is an integer number (133414770).

Almost surely, 2^12797912512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12797912512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16810261020).

12797912512 is an abundant number, since it is smaller than the sum of its proper divisors (20822609528).

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

12797912512 is a wasteful number, since it uses less digits than its factorization.

12797912512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1212 counting only the distinct ones).

The product of its digits is 158760, while the sum is 46.

The spelling of 12797912512 in words is "twelve billion, seven hundred ninety-seven million, nine hundred twelve thousand, five hundred twelve".