66442132700 has 18 divisors (see below), whose sum is σ = 144179428176. Its totient is φ = 26576853040.

The previous prime is 66442132697. The next prime is 66442132703. The reversal of 66442132700 is 723124466.

It is an interprime number because it is at equal distance from previous prime (66442132697) and next prime (66442132703).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66442132703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332210564 + ... + 332210763.

It is an arithmetic number, because the mean of its divisors is an integer number (8009968232).

Almost surely, 2^66442132700 is an apocalyptic number.

It is an amenable number.

66442132700 is an abundant number, since it is smaller than the sum of its proper divisors (77737295476).

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

66442132700 is a wasteful number, since it uses less digits than its factorization.

66442132700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664421341 (or 664421334 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 66442132700 in words is "sixty-six billion, four hundred forty-two million, one hundred thirty-two thousand, seven hundred".