56720342610664 has 64 divisors (see below), whose sum is σ = 109501891692480. Its totient is φ = 27527013696000.

The previous prime is 56720342610661. The next prime is 56720342610689. The reversal of 56720342610664 is 46601624302765.

It is a super-2 number, since 2×56720342610664² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56720342610661) 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, 186224979 + ... + 186529309.

It is an arithmetic number, because the mean of its divisors is an integer number (1710967057695).

Almost surely, 2^{56720342610664} is an apocalyptic number.

It is an amenable number.

56720342610664 is a deficient number, since it is larger than the sum of its proper divisors (52781549081816).

56720342610664 is a wasteful number, since it uses less digits than its factorization.

56720342610664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307282 (or 307278 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 56720342610664 in words is "fifty-six trillion, seven hundred twenty billion, three hundred forty-two million, six hundred ten thousand, six hundred sixty-four".