66692327918 has 16 divisors (see below), whose sum is σ = 105949720320. Its totient is φ = 31397289336.

The previous prime is 66692327903. The next prime is 66692327951. The reversal of 66692327918 is 81972329666.

It is a congruent number.

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, 5377430 + ... + 5389817.

It is an arithmetic number, because the mean of its divisors is an integer number (6621857520).

Almost surely, 2^66692327918 is an apocalyptic number.

66692327918 is a deficient number, since it is larger than the sum of its proper divisors (39257392402).

66692327918 is a wasteful number, since it uses less digits than its factorization.

66692327918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767431.

The product of its digits is 11757312, while the sum is 59.

The spelling of 66692327918 in words is "sixty-six billion, six hundred ninety-two million, three hundred twenty-seven thousand, nine hundred eighteen".