72513476840 has 32 divisors (see below), whose sum is σ = 186463226880. Its totient is φ = 24861763392.

The previous prime is 72513476831. The next prime is 72513476843. The reversal of 72513476840 is 4867431527.

It is not an unprimeable number, because it can be changed into a prime (72513476843) 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, 129488072 + ... + 129488631.

It is an arithmetic number, because the mean of its divisors is an integer number (5826975840).

Almost surely, 2^72513476840 is an apocalyptic number.

72513476840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72513476840 is an abundant number, since it is smaller than the sum of its proper divisors (113949750040).

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

72513476840 is a wasteful number, since it uses less digits than its factorization.

72513476840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258976721 (or 258976717 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 72513476840 in words is "seventy-two billion, five hundred thirteen million, four hundred seventy-six thousand, eight hundred forty".