18636862703042 has 16 divisors (see below), whose sum is σ = 28399534413432. Its totient is φ = 9171412738560.

The previous prime is 18636862702979. The next prime is 18636862703087. The reversal of 18636862703042 is 24030726863681.

It can be written as a sum of positive squares in 4 ways, for example, as 5669870560201 + 12966992142841 = 2381149^2 + 3600971^2 .

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, 265341413 + ... + 265411640.

Almost surely, 2^{18636862703042} is an apocalyptic number.

18636862703042 is a deficient number, since it is larger than the sum of its proper divisors (9762671710390).

18636862703042 is a wasteful number, since it uses less digits than its factorization.

18636862703042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530753333.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 18636862703042 in words is "eighteen trillion, six hundred thirty-six billion, eight hundred sixty-two million, seven hundred three thousand, forty-two".