66742886524 has 24 divisors (see below), whose sum is σ = 117083530368. Its totient is φ = 33290537280.

The previous prime is 66742886503. The next prime is 66742886527. The reversal of 66742886524 is 42568824766.

It is a super-2 number, since 2×66742886524² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66742886527) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3323634 + ... + 3343654.

It is an arithmetic number, because the mean of its divisors is an integer number (4878480432).

Almost surely, 2^66742886524 is an apocalyptic number.

It is an amenable number.

66742886524 is a deficient number, since it is larger than the sum of its proper divisors (50340643844).

66742886524 is a wasteful number, since it uses less digits than its factorization.

66742886524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22005 (or 22003 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 58.

The spelling of 66742886524 in words is "sixty-six billion, seven hundred forty-two million, eight hundred eighty-six thousand, five hundred twenty-four".