39213185013 has 6 divisors (see below), whose sum is σ = 56641267254. Its totient is φ = 26142123336.

The previous prime is 39213185009. The next prime is 39213185021. The reversal of 39213185013 is 31058131293.

It can be written as a sum of positive squares in only one way, i.e., 28658088369 + 10555096644 = 169287^2 + 102738^2 .

It is not a de Polignac number, because 39213185013 - 2² = 39213185009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39213185003) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2178510270 + ... + 2178510287.

It is an arithmetic number, because the mean of its divisors is an integer number (9440211209).

Almost surely, 2^39213185013 is an apocalyptic number.

It is an amenable number.

39213185013 is a deficient number, since it is larger than the sum of its proper divisors (17428082241).

39213185013 is a wasteful number, since it uses less digits than its factorization.

39213185013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357020563 (or 4357020560 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 39213185013 in words is "thirty-nine billion, two hundred thirteen million, one hundred eighty-five thousand, thirteen".