72900523420 has 24 divisors (see below), whose sum is σ = 153103614048. Its totient is φ = 29157825600.

The previous prime is 72900523417. The next prime is 72900523441. The reversal of 72900523420 is 2432500927.

It is a happy number.

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, 113025 + ... + 398215.

It is an arithmetic number, because the mean of its divisors is an integer number (6379317252).

Almost surely, 2^72900523420 is an apocalyptic number.

It is an amenable number.

72900523420 is an abundant number, since it is smaller than the sum of its proper divisors (80203090628).

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

72900523420 is a wasteful number, since it uses less digits than its factorization.

72900523420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297981 (or 297979 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 72900523420 in words is "seventy-two billion, nine hundred million, five hundred twenty-three thousand, four hundred twenty".