72634345660 has 24 divisors (see below), whose sum is σ = 153881972496. Its totient is φ = 28796624640.

The previous prime is 72634345649. The next prime is 72634345699. The reversal of 72634345660 is 6654343627.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72634345660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16067286 + ... + 16071805.

It is an arithmetic number, because the mean of its divisors is an integer number (6411748854).

Almost surely, 2^72634345660 is an apocalyptic number.

It is an amenable number.

72634345660 is an abundant number, since it is smaller than the sum of its proper divisors (81247626836).

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

72634345660 is a wasteful number, since it uses less digits than its factorization.

72634345660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32139213 (or 32139211 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 72634345660 in words is "seventy-two billion, six hundred thirty-four million, three hundred forty-five thousand, six hundred sixty".