18770823135668 has 36 divisors (see below), whose sum is σ = 36708169163652. Its totient is φ = 8368416495360.

The previous prime is 18770823135637. The next prime is 18770823135749. The reversal of 18770823135668 is 86653132807781.

It can be written as a sum of positive squares in 2 ways, for example, as 16689087811984 + 2081735323684 = 4085228^2 + 1442822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382304423 + ... + 382353518.

It is an arithmetic number, because the mean of its divisors is an integer number (1019671365657).

Almost surely, 2^{18770823135668} is an apocalyptic number.

It is an amenable number.

18770823135668 is a deficient number, since it is larger than the sum of its proper divisors (17937346027984).

18770823135668 is a wasteful number, since it uses less digits than its factorization.

18770823135668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764658000 (or 764657979 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 18770823135668 in words is "eighteen trillion, seven hundred seventy billion, eight hundred twenty-three million, one hundred thirty-five thousand, six hundred sixty-eight".