78729713980 has 24 divisors (see below), whose sum is σ = 166521846960. Its totient is φ = 31265324160.

The previous prime is 78729713969. The next prime is 78729714017. The reversal of 78729713980 is 8931792787.

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, 14157241 + ... + 14162800.

It is an arithmetic number, because the mean of its divisors is an integer number (6938410290).

Almost surely, 2^78729713980 is an apocalyptic number.

It is an amenable number.

78729713980 is an abundant number, since it is smaller than the sum of its proper divisors (87792132980).

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

78729713980 is a wasteful number, since it uses less digits than its factorization.

78729713980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28320189 (or 28320187 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 78729713980 in words is "seventy-eight billion, seven hundred twenty-nine million, seven hundred thirteen thousand, nine hundred eighty".