72403570665132 has 48 divisors (see below), whose sum is σ = 193077081039360. Its totient is φ = 20686638840192.

The previous prime is 72403570665119. The next prime is 72403570665157. The reversal of 72403570665132 is 23156607530427.

It is a happy number.

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, 17402793 + ... + 21158079.

It is an arithmetic number, because the mean of its divisors is an integer number (4022439188320).

Almost surely, 2^{72403570665132} is an apocalyptic number.

It is an amenable number.

72403570665132 is an abundant number, since it is smaller than the sum of its proper divisors (120673510374228).

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

72403570665132 is a wasteful number, since it uses less digits than its factorization.

72403570665132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984830 (or 3984828 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 51.

The spelling of 72403570665132 in words is "seventy-two trillion, four hundred three billion, five hundred seventy million, six hundred sixty-five thousand, one hundred thirty-two".