72170362908 has 48 divisors (see below), whose sum is σ = 213838114560. Its totient is φ = 20620103472.

The previous prime is 72170362879. The next prime is 72170362909. The reversal of 72170362908 is 80926307127.

72170362908 is a `hidden beast` number, since 7 + 2 + 17 + 0 + 3 + 629 + 0 + 8 = 666.

It is a super-2 number, since 2×72170362908² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72170362909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47730966 + ... + 47732477.

It is an arithmetic number, because the mean of its divisors is an integer number (4454960720).

Almost surely, 2^72170362908 is an apocalyptic number.

It is an amenable number.

72170362908 is an abundant number, since it is smaller than the sum of its proper divisors (141667751652).

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

72170362908 is a wasteful number, since it uses less digits than its factorization.

72170362908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95463463 (or 95463455 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 72170362908 in words is "seventy-two billion, one hundred seventy million, three hundred sixty-two thousand, nine hundred eight".