75556646320772 has 96 divisors (see below), whose sum is σ = 144889224318720. Its totient is φ = 34362288576000.

The previous prime is 75556646320763. The next prime is 75556646320787. The reversal of 75556646320772 is 27702364665557.

It is a junction number, because it is equal to n+sod(n) for n = 75556646320699 and 75556646320708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 983298338 + ... + 983375174.

It is an arithmetic number, because the mean of its divisors is an integer number (1509262753320).

Almost surely, 2^{75556646320772} is an apocalyptic number.

It is an amenable number.

75556646320772 is a deficient number, since it is larger than the sum of its proper divisors (69332577997948).

75556646320772 is a wasteful number, since it uses less digits than its factorization.

75556646320772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82461 (or 82459 counting only the distinct ones).

The product of its (nonzero) digits is 444528000, while the sum is 65.

The spelling of 75556646320772 in words is "seventy-five trillion, five hundred fifty-six billion, six hundred forty-six million, three hundred twenty thousand, seven hundred seventy-two".