72689879780 has 48 divisors (see below), whose sum is σ = 176183030016. Its totient is φ = 24675484800.

The previous prime is 72689879767. The next prime is 72689879783. The reversal of 72689879780 is 8797898627.

It is not an unprimeable number, because it can be changed into a prime (72689879783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556224 + ... + 2584503.

It is an arithmetic number, because the mean of its divisors is an integer number (3670479792).

Almost surely, 2^72689879780 is an apocalyptic number.

72689879780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72689879780 is an abundant number, since it is smaller than the sum of its proper divisors (103493150236).

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

72689879780 is a wasteful number, since it uses less digits than its factorization.

72689879780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140844 (or 5140842 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 71.

The spelling of 72689879780 in words is "seventy-two billion, six hundred eighty-nine million, eight hundred seventy-nine thousand, seven hundred eighty".