39039696965 has 16 divisors (see below), whose sum is σ = 48292711920. Its totient is φ = 30274652160.

The previous prime is 39039696923. The next prime is 39039696989. The reversal of 39039696965 is 56969693093.

It can be written as a sum of positive squares in 8 ways, for example, as 1929142084 + 37110554881 = 43922^2 + 192641^2 .

It is not a de Polignac number, because 39039696965 - 2⁶ = 39039696901 is a prime.

It is a super-2 number, since 2×39039696965² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342476 + ... + 442005.

It is an arithmetic number, because the mean of its divisors is an integer number (3018294495).

Almost surely, 2^39039696965 is an apocalyptic number.

It is an amenable number.

39039696965 is a deficient number, since it is larger than the sum of its proper divisors (9253014955).

39039696965 is a wasteful number, since it uses less digits than its factorization.

39039696965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784792.

The product of its (nonzero) digits is 63772920, while the sum is 65.

The spelling of 39039696965 in words is "thirty-nine billion, thirty-nine million, six hundred ninety-six thousand, nine hundred sixty-five".