72170952384 has 56 divisors (see below), whose sum is σ = 191464438000. Its totient is φ = 23992464384.

The previous prime is 72170952367. The next prime is 72170952419. The reversal of 72170952384 is 48325907127.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432259 + ... + 575490.

Almost surely, 2^72170952384 is an apocalyptic number.

It is an amenable number.

72170952384 is an abundant number, since it is smaller than the sum of its proper divisors (119293485616).

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

72170952384 is a wasteful number, since it uses less digits than its factorization.

72170952384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008137 (or 1008127 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 72170952384 in words is "seventy-two billion, one hundred seventy million, nine hundred fifty-two thousand, three hundred eighty-four".