66126324872 has 64 divisors (see below), whose sum is σ = 141560395200. Its totient is φ = 28761384960.

The previous prime is 66126324863. The next prime is 66126324899. The reversal of 66126324872 is 27842362166.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206138 + ... + 418025.

It is an arithmetic number, because the mean of its divisors is an integer number (2211881175).

Almost surely, 2^66126324872 is an apocalyptic number.

It is an amenable number.

66126324872 is an abundant number, since it is smaller than the sum of its proper divisors (75434070328).

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

66126324872 is a wasteful number, since it uses less digits than its factorization.

66126324872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624246 (or 624242 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The spelling of 66126324872 in words is "sixty-six billion, one hundred twenty-six million, three hundred twenty-four thousand, eight hundred seventy-two".