18664080968 has 32 divisors (see below), whose sum is σ = 38902805760. Its totient is φ = 8336312640.

The previous prime is 18664080949. The next prime is 18664080983. The reversal of 18664080968 is 86908046681.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2891330 + ... + 2897777.

It is an arithmetic number, because the mean of its divisors is an integer number (1215712680).

Almost surely, 2^18664080968 is an apocalyptic number.

It is an amenable number.

18664080968 is an abundant number, since it is smaller than the sum of its proper divisors (20238724792).

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

18664080968 is a wasteful number, since it uses less digits than its factorization.

18664080968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789157 (or 5789153 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 18664080968 in words is "eighteen billion, six hundred sixty-four million, eighty thousand, nine hundred sixty-eight".