66234399956 has 12 divisors (see below), whose sum is σ = 116621306592. Its totient is φ = 32914026648.

The previous prime is 66234399953. The next prime is 66234399961. The reversal of 66234399956 is 65999343266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66234399953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50792600 + ... + 50793903.

It is an arithmetic number, because the mean of its divisors is an integer number (9718442216).

Almost surely, 2^66234399956 is an apocalyptic number.

It is an amenable number.

66234399956 is a deficient number, since it is larger than the sum of its proper divisors (50386906636).

66234399956 is a wasteful number, since it uses less digits than its factorization.

66234399956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101586670 (or 101586668 counting only the distinct ones).

The product of its digits is 56687040, while the sum is 62.

The spelling of 66234399956 in words is "sixty-six billion, two hundred thirty-four million, three hundred ninety-nine thousand, nine hundred fifty-six".