78729293580 has 48 divisors (see below), whose sum is σ = 251933740800. Its totient is φ = 17995267008.

The previous prime is 78729293567. The next prime is 78729293677. The reversal of 78729293580 is 8539292787.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93724930 + ... + 93725769.

It is an arithmetic number, because the mean of its divisors is an integer number (5248619600).

Almost surely, 2^78729293580 is an apocalyptic number.

78729293580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78729293580 is an abundant number, since it is smaller than the sum of its proper divisors (173204447220).

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

78729293580 is a wasteful number, since it uses less digits than its factorization.

78729293580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187450718 (or 187450716 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 78729293580 in words is "seventy-eight billion, seven hundred twenty-nine million, two hundred ninety-three thousand, five hundred eighty".