72660278620 has 48 divisors (see below), whose sum is σ = 152898969888. Its totient is φ = 29004687360.

The previous prime is 72660278617. The next prime is 72660278623. The reversal of 72660278620 is 2687206627.

It is an interprime number because it is at equal distance from previous prime (72660278617) and next prime (72660278623).

It is a super-3 number, since 3×72660278620³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72660278623) 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, 30566872 + ... + 30569248.

It is an arithmetic number, because the mean of its divisors is an integer number (3185395206).

Almost surely, 2^72660278620 is an apocalyptic number.

It is an amenable number.

72660278620 is an abundant number, since it is smaller than the sum of its proper divisors (80238691268).

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

72660278620 is a wasteful number, since it uses less digits than its factorization.

72660278620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870 (or 4868 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 72660278620 in words is "seventy-two billion, six hundred sixty million, two hundred seventy-eight thousand, six hundred twenty".