39997255713 has 8 divisors (see below), whose sum is σ = 53847438528. Its totient is φ = 26405955024.

The previous prime is 39997255709. The next prime is 39997255741. The reversal of 39997255713 is 31755279993.

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

It is not a de Polignac number, because 39997255713 - 2² = 39997255709 is a prime.

It is a super-2 number, since 2×39997255713² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39997255513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64720170 + ... + 64720787.

It is an arithmetic number, because the mean of its divisors is an integer number (6730929816).

Almost surely, 2^39997255713 is an apocalyptic number.

It is an amenable number.

39997255713 is a deficient number, since it is larger than the sum of its proper divisors (13850182815).

39997255713 is a wasteful number, since it uses less digits than its factorization.

39997255713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129441063.

The product of its digits is 16074450, while the sum is 60.

The spelling of 39997255713 in words is "thirty-nine billion, nine hundred ninety-seven million, two hundred fifty-five thousand, seven hundred thirteen".