66788753276 has 48 divisors (see below), whose sum is σ = 135033538752. Its totient is φ = 28313241600.

The previous prime is 66788753267. The next prime is 66788753327. The reversal of 66788753276 is 67235788766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046936 + ... + 1108896.

It is an arithmetic number, because the mean of its divisors is an integer number (2813198724).

Almost surely, 2^66788753276 is an apocalyptic number.

It is an amenable number.

66788753276 is an abundant number, since it is smaller than the sum of its proper divisors (68244785476).

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

66788753276 is a wasteful number, since it uses less digits than its factorization.

66788753276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62390 (or 62388 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 65.

The spelling of 66788753276 in words is "sixty-six billion, seven hundred eighty-eight million, seven hundred fifty-three thousand, two hundred seventy-six".