18878536758680 has 64 divisors (see below), whose sum is σ = 42534947175840. Its totient is φ = 7541065516032.

The previous prime is 18878536758647. The next prime is 18878536758703. The reversal of 18878536758680 is 8685763587881.

It is a junction number, because it is equal to n+sod(n) for n = 18878536758595 and 18878536758604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138993362 + ... + 139129118.

Almost surely, 2^{18878536758680} is an apocalyptic number.

18878536758680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18878536758680 is an abundant number, since it is smaller than the sum of its proper divisors (23656410417160).

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

18878536758680 is a wasteful number, since it uses less digits than its factorization.

18878536758680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140508 (or 140504 counting only the distinct ones).

The product of its (nonzero) digits is 4335206400, while the sum is 80.

The spelling of 18878536758680 in words is "eighteen trillion, eight hundred seventy-eight billion, five hundred thirty-six million, seven hundred fifty-eight thousand, six hundred eighty".