66026877976 has 16 divisors (see below), whose sum is σ = 124240971240. Its totient is φ = 32895952320.

The previous prime is 66026877971. The next prime is 66026877989. The reversal of 66026877976 is 67977862066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66026877971) by changing a digit.

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, 14683446 + ... + 14687941.

Almost surely, 2^66026877976 is an apocalyptic number.

It is an amenable number.

66026877976 is a deficient number, since it is larger than the sum of its proper divisors (58214093264).

66026877976 is a wasteful number, since it uses less digits than its factorization.

66026877976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29371674 (or 29371670 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 66026877976 in words is "sixty-six billion, twenty-six million, eight hundred seventy-seven thousand, nine hundred seventy-six".