72657643360 has 24 divisors (see below), whose sum is σ = 171653682816. Its totient is φ = 29063057280.

The previous prime is 72657643351. The next prime is 72657643361. The reversal of 72657643360 is 6334675627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72657643361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227054976 + ... + 227055295.

It is an arithmetic number, because the mean of its divisors is an integer number (7152236784).

Almost surely, 2^72657643360 is an apocalyptic number.

It is an amenable number.

72657643360 is an abundant number, since it is smaller than the sum of its proper divisors (98996039456).

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

72657643360 is a wasteful number, since it uses less digits than its factorization.

72657643360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454110286 (or 454110278 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 49.

The spelling of 72657643360 in words is "seventy-two billion, six hundred fifty-seven million, six hundred forty-three thousand, three hundred sixty".