39713616538 has 8 divisors (see below), whose sum is σ = 59571975060. Its totient is φ = 19856291520.

The previous prime is 39713616499. The next prime is 39713616557. The reversal of 39713616538 is 83561631793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39623689249 + 89927289 = 199057^2 + 9483^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153853 + ... + 321088.

Almost surely, 2^39713616538 is an apocalyptic number.

39713616538 is a deficient number, since it is larger than the sum of its proper divisors (19858358522).

39713616538 is a wasteful number, since it uses less digits than its factorization.

39713616538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516752.

The product of its digits is 2449440, while the sum is 52.

The spelling of 39713616538 in words is "thirty-nine billion, seven hundred thirteen million, six hundred sixteen thousand, five hundred thirty-eight".