72781488870 has 16 divisors (see below), whose sum is σ = 174675573360. Its totient is φ = 19408397024.

The previous prime is 72781488823. The next prime is 72781488907. The reversal of 72781488870 is 7888418727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213024785 + ... + 1213024844.

It is an arithmetic number, because the mean of its divisors is an integer number (10917223335).

Almost surely, 2^72781488870 is an apocalyptic number.

72781488870 is an abundant number, since it is smaller than the sum of its proper divisors (101894084490).

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

72781488870 is a wasteful number, since it uses less digits than its factorization.

72781488870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426049639.

The product of its (nonzero) digits is 11239424, while the sum is 60.

The spelling of 72781488870 in words is "seventy-two billion, seven hundred eighty-one million, four hundred eighty-eight thousand, eight hundred seventy".