18966466475 has 12 divisors (see below), whose sum is σ = 25656456840. Its totient is φ = 13793793600.

The previous prime is 18966466459. The next prime is 18966466507. The reversal of 18966466475 is 57466466981.

It is not a de Polignac number, because 18966466475 - 2⁴ = 18966466459 is a prime.

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, 34484210 + ... + 34484759.

It is an arithmetic number, because the mean of its divisors is an integer number (2138038070).

Almost surely, 2^18966466475 is an apocalyptic number.

18966466475 is a deficient number, since it is larger than the sum of its proper divisors (6689990365).

18966466475 is a wasteful number, since it uses less digits than its factorization.

18966466475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68968990 (or 68968985 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 62.

The spelling of 18966466475 in words is "eighteen billion, nine hundred sixty-six million, four hundred sixty-six thousand, four hundred seventy-five".