66674635460 has 48 divisors (see below), whose sum is σ = 156055818240. Its totient is φ = 23779929600.

The previous prime is 66674635367. The next prime is 66674635487. The reversal of 66674635460 is 6453647666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5154116 + ... + 5167035.

It is an arithmetic number, because the mean of its divisors is an integer number (3251162880).

Almost surely, 2^66674635460 is an apocalyptic number.

It is an amenable number.

66674635460 is an abundant number, since it is smaller than the sum of its proper divisors (89381182780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66674635460 is a wasteful number, since it uses less digits than its factorization.

66674635460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321196 (or 10321194 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 53.

The spelling of 66674635460 in words is "sixty-six billion, six hundred seventy-four million, six hundred thirty-five thousand, four hundred sixty".