66650769924 has 36 divisors (see below), whose sum is σ = 156753115344. Its totient is φ = 22041922896.

The previous prime is 66650769901. The next prime is 66650769943. The reversal of 66650769924 is 42996705666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21367 + ... + 365729.

It is an arithmetic number, because the mean of its divisors is an integer number (4354253204).

Almost surely, 2^66650769924 is an apocalyptic number.

It is an amenable number.

66650769924 is an abundant number, since it is smaller than the sum of its proper divisors (90102345420).

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

66650769924 is a wasteful number, since it uses less digits than its factorization.

66650769924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344624 (or 344495 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 66650769924 in words is "sixty-six billion, six hundred fifty million, seven hundred sixty-nine thousand, nine hundred twenty-four".