65566631682 has 32 divisors (see below), whose sum is σ = 145724443200. Its totient is φ = 21852421344.

The previous prime is 65566631659. The next prime is 65566631723. The reversal of 65566631682 is 28613666556.

It is a super-2 number, since 2×65566631682² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311494 + ... + 477662.

It is an arithmetic number, because the mean of its divisors is an integer number (4553888850).

Almost surely, 2^65566631682 is an apocalyptic number.

65566631682 is an abundant number, since it is smaller than the sum of its proper divisors (80157811518).

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

65566631682 is a wasteful number, since it uses less digits than its factorization.

65566631682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173487 (or 173481 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 65566631682 in words is "sixty-five billion, five hundred sixty-six million, six hundred thirty-one thousand, six hundred eighty-two".