72045245636 has 48 divisors (see below), whose sum is σ = 156126493824. Its totient is φ = 28326537216.

The previous prime is 72045245579. The next prime is 72045245641. The reversal of 72045245636 is 63654254027.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547805 + ... + 666468.

It is an arithmetic number, because the mean of its divisors is an integer number (3252635288).

Almost surely, 2^72045245636 is an apocalyptic number.

It is an amenable number.

72045245636 is an abundant number, since it is smaller than the sum of its proper divisors (84081248188).

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

72045245636 is a wasteful number, since it uses less digits than its factorization.

72045245636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214460 (or 1214458 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 72045245636 in words is "seventy-two billion, forty-five million, two hundred forty-five thousand, six hundred thirty-six".