66137431683 has 8 divisors (see below), whose sum is σ = 92824465600. Its totient is φ = 41771009448.

The previous prime is 66137431673. The next prime is 66137431747. The reversal of 66137431683 is 38613473166.

66137431683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66137431683 - 2¹⁴ = 66137415299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66137431673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580152853 + ... + 580152966.

It is an arithmetic number, because the mean of its divisors is an integer number (11603058200).

Almost surely, 2^66137431683 is an apocalyptic number.

66137431683 is a deficient number, since it is larger than the sum of its proper divisors (26687033917).

66137431683 is a wasteful number, since it uses less digits than its factorization.

66137431683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160305841.

The product of its digits is 1306368, while the sum is 48.

The spelling of 66137431683 in words is "sixty-six billion, one hundred thirty-seven million, four hundred thirty-one thousand, six hundred eighty-three".