72707891964020 has 24 divisors (see below), whose sum is σ = 152728716962304. Its totient is φ = 29075129387936.

The previous prime is 72707891964011. The next prime is 72707891964031. The reversal of 72707891964020 is 2046919870727.

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, 501638084 + ... + 501783003.

It is an arithmetic number, because the mean of its divisors is an integer number (6363696540096).

Almost surely, 2^{72707891964020} is an apocalyptic number.

It is an amenable number.

72707891964020 is an abundant number, since it is smaller than the sum of its proper divisors (80020824998284).

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

72707891964020 is a wasteful number, since it uses less digits than its factorization.

72707891964020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003424719 (or 1003424717 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 72707891964020 in words is "seventy-two trillion, seven hundred seven billion, eight hundred ninety-one million, nine hundred sixty-four thousand, twenty".