18421657626682 has 32 divisors (see below), whose sum is σ = 28787242095360. Its totient is φ = 8833552711680.

The previous prime is 18421657626653. The next prime is 18421657626797. The reversal of 18421657626682 is 28662675612481.

It is a happy number.

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, 193390138 + ... + 193485370.

It is an arithmetic number, because the mean of its divisors is an integer number (899601315480).

Almost surely, 2^{18421657626682} is an apocalyptic number.

18421657626682 is a deficient number, since it is larger than the sum of its proper divisors (10365584468678).

18421657626682 is a wasteful number, since it uses less digits than its factorization.

18421657626682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135318.

The product of its digits is 92897280, while the sum is 64.

The spelling of 18421657626682 in words is "eighteen trillion, four hundred twenty-one billion, six hundred fifty-seven million, six hundred twenty-six thousand, six hundred eighty-two".