39686744133 has 24 divisors (see below), whose sum is σ = 60458374080. Its totient is φ = 25017145920.

The previous prime is 39686744113. The next prime is 39686744173. The reversal of 39686744133 is 33144768693.

It is a happy number.

39686744133 is a `hidden beast` number, since 3 + 96 + 86 + 7 + 441 + 33 = 666.

It is not a de Polignac number, because 39686744133 - 2¹⁶ = 39686678597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39686744133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39686744113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133641 + ... + 311822.

It is an arithmetic number, because the mean of its divisors is an integer number (2519098920).

Almost surely, 2^39686744133 is an apocalyptic number.

It is an amenable number.

39686744133 is a deficient number, since it is larger than the sum of its proper divisors (20771629947).

39686744133 is a wasteful number, since it uses less digits than its factorization.

39686744133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446009 (or 446006 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 39686744133 in words is "thirty-nine billion, six hundred eighty-six million, seven hundred forty-four thousand, one hundred thirty-three".