39696866485 has 8 divisors (see below), whose sum is σ = 49278868920. Its totient is φ = 30662407104.

The previous prime is 39696866441. The next prime is 39696866509. The reversal of 39696866485 is 58466869693.

It can be written as a sum of positive squares in 4 ways, for example, as 1158857764 + 38538008721 = 34042^2 + 196311^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39696866485 - 2¹⁵ = 39696833717 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 136885602 + ... + 136885891.

It is an arithmetic number, because the mean of its divisors is an integer number (6159858615).

Almost surely, 2^39696866485 is an apocalyptic number.

It is an amenable number.

39696866485 is a deficient number, since it is larger than the sum of its proper divisors (9582002435).

39696866485 is a wasteful number, since it uses less digits than its factorization.

39696866485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273771527.

The product of its digits is 403107840, while the sum is 70.

The spelling of 39696866485 in words is "thirty-nine billion, six hundred ninety-six million, eight hundred sixty-six thousand, four hundred eighty-five".