78518651682 has 32 divisors (see below), whose sum is σ = 160087000320. Its totient is φ = 25665136640.

The previous prime is 78518651641. The next prime is 78518651707. The reversal of 78518651682 is 28615681587.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528994 + ... + 660962.

It is an arithmetic number, because the mean of its divisors is an integer number (5002718760).

Almost surely, 2^78518651682 is an apocalyptic number.

78518651682 is an abundant number, since it is smaller than the sum of its proper divisors (81568348638).

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

78518651682 is a wasteful number, since it uses less digits than its factorization.

78518651682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133898.

The product of its digits is 6451200, while the sum is 57.

The spelling of 78518651682 in words is "seventy-eight billion, five hundred eighteen million, six hundred fifty-one thousand, six hundred eighty-two".