12749054134656 has 64 divisors (see below), whose sum is σ = 38702485774080. Its totient is φ = 3642586894848.

The previous prime is 12749054134577. The next prime is 12749054134669. The reversal of 12749054134656 is 65643145094721.

12749054134656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 12749054134596 and 12749054134605.

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, 2371473156 + ... + 2371478531.

It is an arithmetic number, because the mean of its divisors is an integer number (604726340220).

Almost surely, 2^{12749054134656} is an apocalyptic number.

12749054134656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12749054134656 is an abundant number, since it is smaller than the sum of its proper divisors (25953431639424).

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

12749054134656 is an equidigital number, since it uses as much as digits as its factorization.

12749054134656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742951711 (or 4742951699 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 57.

The spelling of 12749054134656 in words is "twelve trillion, seven hundred forty-nine billion, fifty-four million, one hundred thirty-four thousand, six hundred fifty-six".