18889266658960 has 80 divisors (see below), whose sum is σ = 47137929269616. Its totient is φ = 7013838864384.

The previous prime is 18889266658903. The next prime is 18889266658979. The reversal of 18889266658960 is 6985666298881.

It can be written as a sum of positive squares in 8 ways, for example, as 1319621967504 + 17569644691456 = 1148748^2 + 4191616^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95031999 + ... + 95230558.

Almost surely, 2^{18889266658960} is an apocalyptic number.

18889266658960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18889266658960 is an abundant number, since it is smaller than the sum of its proper divisors (28248662610656).

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

18889266658960 is a wasteful number, since it uses less digits than its factorization.

18889266658960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190262660 (or 190262654 counting only the distinct ones).

The product of its (nonzero) digits is 4299816960, while the sum is 82.

The spelling of 18889266658960 in words is "eighteen trillion, eight hundred eighty-nine billion, two hundred sixty-six million, six hundred fifty-eight thousand, nine hundred sixty".