72732436658 has 48 divisors (see below), whose sum is σ = 133670152800. Its totient is φ = 29512788480.

The previous prime is 72732436643. The next prime is 72732436661. The reversal of 72732436658 is 85663423727.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

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, 3361298 + ... + 3382866.

It is an arithmetic number, because the mean of its divisors is an integer number (2784794850).

Almost surely, 2^72732436658 is an apocalyptic number.

72732436658 is a deficient number, since it is larger than the sum of its proper divisors (60937716142).

72732436658 is a wasteful number, since it uses less digits than its factorization.

72732436658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23415 (or 23408 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 53.

The spelling of 72732436658 in words is "seventy-two billion, seven hundred thirty-two million, four hundred thirty-six thousand, six hundred fifty-eight".