66456239296 has 28 divisors (see below), whose sum is σ = 131882522112. Its totient is φ = 33225997568.

The previous prime is 66456239287. The next prime is 66456239309. The reversal of 66456239296 is 69293265466.

It is a super-3 number, since 3×66456239296³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66456239296.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601466 + ... + 1642438.

Almost surely, 2^66456239296 is an apocalyptic number.

It is an amenable number.

66456239296 is a deficient number, since it is larger than the sum of its proper divisors (65426282816).

66456239296 is a wasteful number, since it uses less digits than its factorization.

66456239296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66328 (or 66318 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 58.

The spelling of 66456239296 in words is "sixty-six billion, four hundred fifty-six million, two hundred thirty-nine thousand, two hundred ninety-six".