18881672668620 has 48 divisors (see below), whose sum is σ = 55167321888000. Its totient is φ = 4816194767296.

The previous prime is 18881672668589. The next prime is 18881672668631. The reversal of 18881672668620 is 2686627618881.

It is a Harshad number since it is a multiple of its sum of digits (69).

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, 6841184370 + ... + 6841187129.

It is an arithmetic number, because the mean of its divisors is an integer number (1149319206000).

Almost surely, 2^{18881672668620} is an apocalyptic number.

18881672668620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18881672668620 is an abundant number, since it is smaller than the sum of its proper divisors (36285649219380).

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

18881672668620 is a wasteful number, since it uses less digits than its factorization.

18881672668620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13682371534 (or 13682371532 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 69.

The spelling of 18881672668620 in words is "eighteen trillion, eight hundred eighty-one billion, six hundred seventy-two million, six hundred sixty-eight thousand, six hundred twenty".