72005170204 has 24 divisors (see below), whose sum is σ = 137485612656. Its totient is φ = 32724576000.

The previous prime is 72005170189. The next prime is 72005170207. The reversal of 72005170204 is 40207150027.

It is a super-2 number, since 2×72005170204² (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 (72005170207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170244 + ... + 415924.

It is an arithmetic number, because the mean of its divisors is an integer number (5728567194).

Almost surely, 2^72005170204 is an apocalyptic number.

It is an amenable number.

72005170204 is a deficient number, since it is larger than the sum of its proper divisors (65480442452).

72005170204 is a wasteful number, since it uses less digits than its factorization.

72005170204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252357 (or 252355 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The spelling of 72005170204 in words is "seventy-two billion, five million, one hundred seventy thousand, two hundred four".