72245156832 has 72 divisors (see below), whose sum is σ = 205567951680. Its totient is φ = 24067560960.

The previous prime is 72245156801. The next prime is 72245156833. The reversal of 72245156832 is 23865154227.

72245156832 is a `hidden beast` number, since 7 + 2 + 2 + 4 + 51 + 568 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72245156833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422769 + ... + 568527.

It is an arithmetic number, because the mean of its divisors is an integer number (2855110440).

Almost surely, 2^72245156832 is an apocalyptic number.

72245156832 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72245156832 is an abundant number, since it is smaller than the sum of its proper divisors (133322794848).

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

72245156832 is a wasteful number, since it uses less digits than its factorization.

72245156832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147496 (or 147485 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 72245156832 in words is "seventy-two billion, two hundred forty-five million, one hundred fifty-six thousand, eight hundred thirty-two".