78680803871808 has 112 divisors (see below), whose sum is σ = 231309204802560. Its totient is φ = 26226683822592.

The previous prime is 78680803871771. The next prime is 78680803871843. The reversal of 78680803871808 is 80817830808687.

78680803871808 is a `hidden beast` number, since 7 + 8 + 68 + 0 + 8 + 0 + 387 + 180 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 301452210 + ... + 301713102.

Almost surely, 2^{78680803871808} is an apocalyptic number.

It is an amenable number.

78680803871808 is an abundant number, since it is smaller than the sum of its proper divisors (152628400930752).

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

78680803871808 is a wasteful number, since it uses less digits than its factorization.

78680803871808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435441 (or 435425 counting only the distinct ones).

The product of its (nonzero) digits is 231211008, while the sum is 72.

The spelling of 78680803871808 in words is "seventy-eight trillion, six hundred eighty billion, eight hundred three million, eight hundred seventy-one thousand, eight hundred eight".