72199958528 has 104 divisors (see below), whose sum is σ = 153365007600. Its totient is φ = 33867694080.

The previous prime is 72199958429. The next prime is 72199958543. The reversal of 72199958528 is 82585999127.

It is a super-2 number, since 2×72199958528² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24300083 + ... + 24303053.

Almost surely, 2^72199958528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72199958528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76682503800).

72199958528 is an abundant number, since it is smaller than the sum of its proper divisors (81165049072).

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

72199958528 is a wasteful number, since it uses less digits than its factorization.

72199958528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3339 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 65.

The spelling of 72199958528 in words is "seventy-two billion, one hundred ninety-nine million, nine hundred fifty-eight thousand, five hundred twenty-eight".