65724195656 has 16 divisors (see below), whose sum is σ = 140837562240. Its totient is φ = 28167512400.

The previous prime is 65724195653. The next prime is 65724195671. The reversal of 65724195656 is 65659142756.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 1173646351 = 65724195656 / (6 + 5 + 7 + 2 + 4 + 1 + 9 + 5 + 6 + 5 + 6).

It is not an unprimeable number, because it can be changed into a prime (65724195653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586823120 + ... + 586823231.

It is an arithmetic number, because the mean of its divisors is an integer number (8802347640).

Almost surely, 2^65724195656 is an apocalyptic number.

It is an amenable number.

65724195656 is an abundant number, since it is smaller than the sum of its proper divisors (75113366584).

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

65724195656 is a wasteful number, since it uses less digits than its factorization.

65724195656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173646364 (or 1173646360 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 56.

The spelling of 65724195656 in words is "sixty-five billion, seven hundred twenty-four million, one hundred ninety-five thousand, six hundred fifty-six".