66136763792 has 40 divisors (see below), whose sum is σ = 139866931872. Its totient is φ = 30045420800.

The previous prime is 66136763657. The next prime is 66136763813. The reversal of 66136763792 is 29736763166.

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 7 ways as a sum of consecutive naturals, for example, 214988 + ... + 422484.

Almost surely, 2^66136763792 is an apocalyptic number.

It is an amenable number.

66136763792 is an abundant number, since it is smaller than the sum of its proper divisors (73730168080).

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

66136763792 is a wasteful number, since it uses less digits than its factorization.

66136763792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209327 (or 209321 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 56.

It can be divided in two parts, 66136 and 763792, that added together give a palindrome (829928).

The spelling of 66136763792 in words is "sixty-six billion, one hundred thirty-six million, seven hundred sixty-three thousand, seven hundred ninety-two".