72612171500 has 48 divisors (see below), whose sum is σ = 173001812256. Its totient is φ = 26404424000.

The previous prime is 72612171481. The next prime is 72612171509. The reversal of 72612171500 is 517121627.

It is not an unprimeable number, because it can be changed into a prime (72612171509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6595607 + ... + 6606606.

It is an arithmetic number, because the mean of its divisors is an integer number (3604204422).

Almost surely, 2^72612171500 is an apocalyptic number.

It is an amenable number.

72612171500 is an abundant number, since it is smaller than the sum of its proper divisors (100389640756).

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

72612171500 is a wasteful number, since it uses less digits than its factorization.

72612171500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202243 (or 13202231 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The spelling of 72612171500 in words is "seventy-two billion, six hundred twelve million, one hundred seventy-one thousand, five hundred".