78715085730 has 16 divisors (see below), whose sum is σ = 188916205824. Its totient is φ = 20990689520.

The previous prime is 78715085723. The next prime is 78715085753. The reversal of 78715085730 is 3758051787.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 1311918066 + ... + 1311918125.

It is an arithmetic number, because the mean of its divisors is an integer number (11807262864).

Almost surely, 2^78715085730 is an apocalyptic number.

78715085730 is an abundant number, since it is smaller than the sum of its proper divisors (110201120094).

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

78715085730 is a wasteful number, since it uses less digits than its factorization.

78715085730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623836201.

The product of its (nonzero) digits is 1646400, while the sum is 51.

The spelling of 78715085730 in words is "seventy-eight billion, seven hundred fifteen million, eighty-five thousand, seven hundred thirty".