56777002721172 has 96 divisors (see below), whose sum is σ = 154029492341760. Its totient is φ = 18064269457920.

The previous prime is 56777002721113. The next prime is 56777002721291. The reversal of 56777002721172 is 27112720077765.

It is a happy number.

56777002721172 is a `hidden beast` number, since 567 + 7 + 7 + 0 + 0 + 2 + 7 + 2 + 1 + 1 + 72 = 666.

56777002721172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115909593 + ... + 116398400.

It is an arithmetic number, because the mean of its divisors is an integer number (1604473878560).

Almost surely, 2^{56777002721172} is an apocalyptic number.

It is an amenable number.

56777002721172 is an abundant number, since it is smaller than the sum of its proper divisors (97252489620588).

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

56777002721172 is a wasteful number, since it uses less digits than its factorization.

56777002721172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232308110 (or 232308102 counting only the distinct ones).

The product of its (nonzero) digits is 4033680, while the sum is 54.

The spelling of 56777002721172 in words is "fifty-six trillion, seven hundred seventy-seven billion, two million, seven hundred twenty-one thousand, one hundred seventy-two".