72664047620 has 24 divisors (see below), whose sum is σ = 152618512704. Its totient is φ = 29061045216.

The previous prime is 72664047619. The next prime is 72664047641. The reversal of 72664047620 is 2674046627.

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, 154112 + ... + 411191.

It is an arithmetic number, because the mean of its divisors is an integer number (6359104696).

Almost surely, 2^72664047620 is an apocalyptic number.

It is an amenable number.

72664047620 is an abundant number, since it is smaller than the sum of its proper divisors (79954465084).

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

72664047620 is a wasteful number, since it uses less digits than its factorization.

72664047620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571739 (or 571737 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 72664047620 in words is "seventy-two billion, six hundred sixty-four million, forty-seven thousand, six hundred twenty".