72233653572 has 36 divisors (see below), whose sum is σ = 186035735340. Its totient is φ = 23623584192.

The previous prime is 72233653561. The next prime is 72233653601. The reversal of 72233653572 is 27535633227.

72233653572 is a `hidden beast` number, since 7 + 2 + 23 + 3 + 6 + 53 + 572 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40572433476 + 31661220096 = 201426^2 + 177936^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18927247 + ... + 18931062.

It is an arithmetic number, because the mean of its divisors is an integer number (5167659315).

Almost surely, 2^72233653572 is an apocalyptic number.

It is an amenable number.

72233653572 is an abundant number, since it is smaller than the sum of its proper divisors (113802081768).

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

72233653572 is a wasteful number, since it uses less digits than its factorization.

72233653572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37858372 (or 37858367 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 45.

The spelling of 72233653572 in words is "seventy-two billion, two hundred thirty-three million, six hundred fifty-three thousand, five hundred seventy-two".