18666162147602 has 8 divisors (see below), whose sum is σ = 28527530829516. Its totient is φ = 9156985204432.

The previous prime is 18666162147551. The next prime is 18666162147641. The reversal of 18666162147602 is 20674126166681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16590542776201 + 2075619371401 = 4073149^2 + 1440701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88047934553 + ... + 88047934764.

Almost surely, 2^{18666162147602} is an apocalyptic number.

18666162147602 is a deficient number, since it is larger than the sum of its proper divisors (9861368681914).

18666162147602 is a wasteful number, since it uses less digits than its factorization.

18666162147602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176095869372.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 18666162147602 in words is "eighteen trillion, six hundred sixty-six billion, one hundred sixty-two million, one hundred forty-seven thousand, six hundred two".