7975729446256 has 80 divisors (see below), whose sum is σ = 18190929456000. Its totient is φ = 3339753096960.

The previous prime is 7975729446241. The next prime is 7975729446257. The reversal of 7975729446256 is 6526449275797.

It is a super-2 number, since 2×7975729446256² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7975729446257) 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, 2351170 + ... + 4634593.

It is an arithmetic number, because the mean of its divisors is an integer number (227386618200).

Almost surely, 2^{7975729446256} is an apocalyptic number.

It is an amenable number.

7975729446256 is an abundant number, since it is smaller than the sum of its proper divisors (10215200009744).

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

7975729446256 is a wasteful number, since it uses less digits than its factorization.

7975729446256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986294 (or 6986288 counting only the distinct ones).

The product of its digits is 1600300800, while the sum is 73.

The spelling of 7975729446256 in words is "seven trillion, nine hundred seventy-five billion, seven hundred twenty-nine million, four hundred forty-six thousand, two hundred fifty-six".