56747732287728 has 80 divisors (see below), whose sum is σ = 150178811753376. Its totient is φ = 18453940654080.

The previous prime is 56747732287717. The next prime is 56747732287739. The reversal of 56747732287728 is 82778223774765.

It is an interprime number because it is at equal distance from previous prime (56747732287717) and next prime (56747732287739).

It is a self number, because there is not a number n which added to its sum of digits gives 56747732287728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61488700 + ... + 62404772.

Almost surely, 2^{56747732287728} is an apocalyptic number.

It is an amenable number.

56747732287728 is an abundant number, since it is smaller than the sum of its proper divisors (93431079465648).

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

56747732287728 is a wasteful number, since it uses less digits than its factorization.

56747732287728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947602 (or 947596 counting only the distinct ones).

The product of its digits is 3097866240, while the sum is 75.

The spelling of 56747732287728 in words is "fifty-six trillion, seven hundred forty-seven billion, seven hundred thirty-two million, two hundred eighty-seven thousand, seven hundred twenty-eight".