66958642032 has 80 divisors (see below), whose sum is σ = 174682569600. Its totient is φ = 22100166400.

The previous prime is 66958642031. The next prime is 66958642081. The reversal of 66958642032 is 23024685966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66958642031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2887219 + ... + 2910317.

It is an arithmetic number, because the mean of its divisors is an integer number (2183532120).

Almost surely, 2^66958642032 is an apocalyptic number.

It is an amenable number.

66958642032 is an abundant number, since it is smaller than the sum of its proper divisors (107723927568).

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

66958642032 is a wasteful number, since it uses less digits than its factorization.

66958642032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23702 (or 23696 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 66958642032 in words is "sixty-six billion, nine hundred fifty-eight million, six hundred forty-two thousand, thirty-two".