72520021054 has 16 divisors (see below), whose sum is σ = 117522013392. Its totient is φ = 33363839808.

The previous prime is 72520021043. The next prime is 72520021061. The reversal of 72520021054 is 45012002527.

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, 4447504 + ... + 4463779.

It is an arithmetic number, because the mean of its divisors is an integer number (7345125837).

Almost surely, 2^72520021054 is an apocalyptic number.

72520021054 is a deficient number, since it is larger than the sum of its proper divisors (45001992338).

72520021054 is a wasteful number, since it uses less digits than its factorization.

72520021054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8911611.

The product of its (nonzero) digits is 5600, while the sum is 28.

The spelling of 72520021054 in words is "seventy-two billion, five hundred twenty million, twenty-one thousand, fifty-four".