78818764832660 has 12 divisors (see below), whose sum is σ = 165519406148628. Its totient is φ = 31527505933056.

The previous prime is 78818764832659. The next prime is 78818764832677. The reversal of 78818764832660 is 6623846781887.

It can be written as a sum of positive squares in 2 ways, for example, as 36102841342096 + 42715923490564 = 6008564^2 + 6535742^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970469120797 + ... + 1970469120836.

It is an arithmetic number, because the mean of its divisors is an integer number (13793283845719).

Almost surely, 2^{78818764832660} is an apocalyptic number.

It is an amenable number.

78818764832660 is an abundant number, since it is smaller than the sum of its proper divisors (86700641315968).

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

78818764832660 is a wasteful number, since it uses less digits than its factorization.

78818764832660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940938241642 (or 3940938241640 counting only the distinct ones).

The product of its (nonzero) digits is 1040449536, while the sum is 74.

The spelling of 78818764832660 in words is "seventy-eight trillion, eight hundred eighteen billion, seven hundred sixty-four million, eight hundred thirty-two thousand, six hundred sixty".