72170952416 has 12 divisors (see below), whose sum is σ = 142086562632. Its totient is φ = 36085476192.

The previous prime is 72170952367. The next prime is 72170952419. The reversal of 72170952416 is 61425907127.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72170952419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127671100 + ... + 1127671163.

It is an arithmetic number, because the mean of its divisors is an integer number (11840546886).

Almost surely, 2^72170952416 is an apocalyptic number.

It is an amenable number.

72170952416 is a deficient number, since it is larger than the sum of its proper divisors (69915610216).

72170952416 is a wasteful number, since it uses less digits than its factorization.

72170952416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255342273 (or 2255342265 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 72170952416 in words is "seventy-two billion, one hundred seventy million, nine hundred fifty-two thousand, four hundred sixteen".