72032276655 has 24 divisors (see below), whose sum is σ = 126972153360. Its totient is φ = 37766073600.

The previous prime is 72032276549. The next prime is 72032276663. The reversal of 72032276655 is 55667223027.

It is not a de Polignac number, because 72032276655 - 2⁷ = 72032276527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 72032276655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13562746 + ... + 13568055.

It is an arithmetic number, because the mean of its divisors is an integer number (5290506390).

Almost surely, 2^72032276655 is an apocalyptic number.

72032276655 is a deficient number, since it is larger than the sum of its proper divisors (54939876705).

72032276655 is a wasteful number, since it uses less digits than its factorization.

72032276655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130871 (or 27130868 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The spelling of 72032276655 in words is "seventy-two billion, thirty-two million, two hundred seventy-six thousand, six hundred fifty-five".