39771797913 has 12 divisors (see below), whose sum is σ = 59301319168. Its totient is φ = 25659224280.

The previous prime is 39771797873. The next prime is 39771797917. The reversal of 39771797913 is 31979717793.

39771797913 is a `hidden beast` number, since 397 + 7 + 179 + 79 + 1 + 3 = 666.

It is not a de Polignac number, because 39771797913 - 2¹⁴ = 39771781529 is a prime.

It is a super-2 number, since 2×39771797913² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39771797917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71275345 + ... + 71275902.

Almost surely, 2^39771797913 is an apocalyptic number.

It is an amenable number.

39771797913 is a deficient number, since it is larger than the sum of its proper divisors (19529521255).

39771797913 is a wasteful number, since it uses less digits than its factorization.

39771797913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142551284 (or 142551281 counting only the distinct ones).

The product of its digits is 15752961, while the sum is 63.

The spelling of 39771797913 in words is "thirty-nine billion, seven hundred seventy-one million, seven hundred ninety-seven thousand, nine hundred thirteen".