18445622951836 has 6 divisors (see below), whose sum is σ = 32279840165720. Its totient is φ = 9222811475916.

The previous prime is 18445622951831. The next prime is 18445622951839. The reversal of 18445622951836 is 63815922654481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18445622951831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2305702868976 + ... + 2305702868983.

Almost surely, 2^{18445622951836} is an apocalyptic number.

It is an amenable number.

18445622951836 is a deficient number, since it is larger than the sum of its proper divisors (13834217213884).

18445622951836 is a wasteful number, since it uses less digits than its factorization.

18445622951836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611405737963 (or 4611405737961 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 64.

The spelling of 18445622951836 in words is "eighteen trillion, four hundred forty-five billion, six hundred twenty-two million, nine hundred fifty-one thousand, eight hundred thirty-six".