66597196766 has 8 divisors (see below), whose sum is σ = 99973660104. Its totient is φ = 33272643400.

The previous prime is 66597196753. The next prime is 66597196829. The reversal of 66597196766 is 66769179566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66597196696 and 66597196705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12974285 + ... + 12979416.

It is an arithmetic number, because the mean of its divisors is an integer number (12496707513).

Almost surely, 2^66597196766 is an apocalyptic number.

66597196766 is a deficient number, since it is larger than the sum of its proper divisors (33376463338).

66597196766 is a wasteful number, since it uses less digits than its factorization.

66597196766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25954986.

The product of its digits is 154314720, while the sum is 68.

The spelling of 66597196766 in words is "sixty-six billion, five hundred ninety-seven million, one hundred ninety-six thousand, seven hundred sixty-six".