78788865308660 has 48 divisors (see below), whose sum is σ = 178192439384400. Its totient is φ = 29089903524864.

The previous prime is 78788865308579. The next prime is 78788865308677. The reversal of 78788865308660 is 6680356888787.

It can be written as a sum of positive squares in 8 ways, for example, as 14394724345444 + 64394140963216 = 3794038^2 + 8024596^2 .

It is a congruent number.

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, 1593905 + ... + 12653784.

It is an arithmetic number, because the mean of its divisors is an integer number (3712342487175).

Almost surely, 2^{78788865308660} is an apocalyptic number.

It is an amenable number.

78788865308660 is an abundant number, since it is smaller than the sum of its proper divisors (99403574075740).

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

78788865308660 is a wasteful number, since it uses less digits than its factorization.

78788865308660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268980 (or 14268978 counting only the distinct ones).

The product of its (nonzero) digits is 5202247680, while the sum is 80.

The spelling of 78788865308660 in words is "seventy-eight trillion, seven hundred eighty-eight billion, eight hundred sixty-five million, three hundred eight thousand, six hundred sixty".