78790538980 has 48 divisors (see below), whose sum is σ = 168649924464. Its totient is φ = 30911569920.

The previous prime is 78790538969. The next prime is 78790538989. The reversal of 78790538980 is 8983509787.

It can be written as a sum of positive squares in 8 ways, for example, as 27471073536 + 51319465444 = 165744^2 + 226538^2 .

It is not an unprimeable number, because it can be changed into a prime (78790538989) 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, 339184 + ... + 522136.

It is an arithmetic number, because the mean of its divisors is an integer number (3513540093).

Almost surely, 2^78790538980 is an apocalyptic number.

It is an amenable number.

78790538980 is an abundant number, since it is smaller than the sum of its proper divisors (89859385484).

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

78790538980 is a wasteful number, since it uses less digits than its factorization.

78790538980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183376 (or 183374 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 78790538980 in words is "seventy-eight billion, seven hundred ninety million, five hundred thirty-eight thousand, nine hundred eighty".