653723720256 has 56 divisors (see below), whose sum is σ = 1732522259104. Its totient is φ = 217545292800.

The previous prime is 653723720231. The next prime is 653723720257. The reversal of 653723720256 is 652027327356.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (653723720257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717230 + ... + 2948013.

It is an arithmetic number, because the mean of its divisors is an integer number (30937897484).

Almost surely, 2^653723720256 is an apocalyptic number.

It is an amenable number.

653723720256 is an abundant number, since it is smaller than the sum of its proper divisors (1078798538848).

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

653723720256 is a wasteful number, since it uses less digits than its factorization.

653723720256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665859 (or 5665849 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 48.

The spelling of 653723720256 in words is "six hundred fifty-three billion, seven hundred twenty-three million, seven hundred twenty thousand, two hundred fifty-six".