78837506620 has 24 divisors (see below), whose sum is σ = 165709729584. Its totient is φ = 31506247296.

The previous prime is 78837506599. The next prime is 78837506623. The reversal of 78837506620 is 2660573887.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78837506623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774722 + ... + 1818601.

It is an arithmetic number, because the mean of its divisors is an integer number (6904572066).

Almost surely, 2^78837506620 is an apocalyptic number.

It is an amenable number.

78837506620 is an abundant number, since it is smaller than the sum of its proper divisors (86872222964).

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

78837506620 is a wasteful number, since it uses less digits than its factorization.

78837506620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3594429 (or 3594427 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 78837506620 in words is "seventy-eight billion, eight hundred thirty-seven million, five hundred six thousand, six hundred twenty".