72101571500 has 48 divisors (see below), whose sum is σ = 179965531200. Its totient is φ = 24720537600.

The previous prime is 72101571497. The next prime is 72101571511. The reversal of 72101571500 is 517510127.

It is a super-2 number, since 2×72101571500² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10296725 + ... + 10303724.

It is an arithmetic number, because the mean of its divisors is an integer number (3749281900).

Almost surely, 2^72101571500 is an apocalyptic number.

72101571500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72101571500 is an abundant number, since it is smaller than the sum of its proper divisors (107863959700).

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

72101571500 is a wasteful number, since it uses less digits than its factorization.

72101571500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20600475 (or 20600463 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 29.

The spelling of 72101571500 in words is "seventy-two billion, one hundred one million, five hundred seventy-one thousand, five hundred".