66323979100 has 36 divisors (see below), whose sum is σ = 143956895544. Its totient is φ = 26523350080.

The previous prime is 66323979097. The next prime is 66323979133. The reversal of 66323979100 is 197932366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361467 + ... + 513133.

It is an arithmetic number, because the mean of its divisors is an integer number (3998802654).

Almost surely, 2^66323979100 is an apocalyptic number.

It is an amenable number.

66323979100 is an abundant number, since it is smaller than the sum of its proper divisors (77632916444).

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

66323979100 is a wasteful number, since it uses less digits than its factorization.

66323979100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156054 (or 156047 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 46.

The spelling of 66323979100 in words is "sixty-six billion, three hundred twenty-three million, nine hundred seventy-nine thousand, one hundred".