11975072551972 has 24 divisors (see below), whose sum is σ = 21680057726712. Its totient is φ = 5783662176000.

The previous prime is 11975072551957. The next prime is 11975072551993. The reversal of 11975072551972 is 27915527057911.

It can be written as a sum of positive squares in 4 ways, for example, as 4877622429156 + 7097450122816 = 2208534^2 + 2664104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11975072551972.

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, 361462323 + ... + 361495450.

It is an arithmetic number, because the mean of its divisors is an integer number (903335738613).

Almost surely, 2^{11975072551972} is an apocalyptic number.

It is an amenable number.

11975072551972 is a deficient number, since it is larger than the sum of its proper divisors (9704985174740).

11975072551972 is a wasteful number, since it uses less digits than its factorization.

11975072551972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722957919 (or 722957917 counting only the distinct ones).

The product of its (nonzero) digits is 13891500, while the sum is 61.

The spelling of 11975072551972 in words is "eleven trillion, nine hundred seventy-five billion, seventy-two million, five hundred fifty-one thousand, nine hundred seventy-two".