66693330906 has 16 divisors (see below), whose sum is σ = 134633267424. Its totient is φ = 22023342704.

The previous prime is 66693330817. The next prime is 66693330973. The reversal of 66693330906 is 60903339666.

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, 51941205 + ... + 51942488.

It is an arithmetic number, because the mean of its divisors is an integer number (8414579214).

Almost surely, 2^66693330906 is an apocalyptic number.

66693330906 is an abundant number, since it is smaller than the sum of its proper divisors (67939936518).

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

66693330906 is a wasteful number, since it uses less digits than its factorization.

66693330906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103883805.

The product of its (nonzero) digits is 2834352, while the sum is 51.

The spelling of 66693330906 in words is "sixty-six billion, six hundred ninety-three million, three hundred thirty thousand, nine hundred six".