72471861660 has 96 divisors (see below), whose sum is σ = 223111913472. Its totient is φ = 17430577920.

The previous prime is 72471861647. The next prime is 72471861769. The reversal of 72471861660 is 6616817427.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348487 + ... + 516126.

It is an arithmetic number, because the mean of its divisors is an integer number (2324082432).

Almost surely, 2^72471861660 is an apocalyptic number.

It is an amenable number.

72471861660 is an abundant number, since it is smaller than the sum of its proper divisors (150640051812).

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

72471861660 is a wasteful number, since it uses less digits than its factorization.

72471861660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864763 (or 864761 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 72471861660 in words is "seventy-two billion, four hundred seventy-one million, eight hundred sixty-one thousand, six hundred sixty".