12791537755428 has 48 divisors (see below), whose sum is σ = 30207280694976. Its totient is φ = 4212368601600.

The previous prime is 12791537755411. The next prime is 12791537755429. The reversal of 12791537755428 is 82455773519721.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12791537755429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46276800 + ... + 46552392.

It is an arithmetic number, because the mean of its divisors is an integer number (629318347812).

Almost surely, 2^{12791537755428} is an apocalyptic number.

It is an amenable number.

12791537755428 is an abundant number, since it is smaller than the sum of its proper divisors (17415742939548).

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

12791537755428 is a wasteful number, since it uses less digits than its factorization.

12791537755428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322284 (or 322282 counting only the distinct ones).

The product of its digits is 148176000, while the sum is 66.

The spelling of 12791537755428 in words is "twelve trillion, seven hundred ninety-one billion, five hundred thirty-seven million, seven hundred fifty-five thousand, four hundred twenty-eight".