39506489816 has 64 divisors (see below), whose sum is σ = 77989132800. Its totient is φ = 18742192128.

The previous prime is 39506489809. The next prime is 39506489863. The reversal of 39506489816 is 61898460593.

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, 1912841 + ... + 1933383.

It is an arithmetic number, because the mean of its divisors is an integer number (1218580200).

Almost surely, 2^39506489816 is an apocalyptic number.

It is an amenable number.

39506489816 is a deficient number, since it is larger than the sum of its proper divisors (38482642984).

39506489816 is a wasteful number, since it uses less digits than its factorization.

39506489816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20748 (or 20744 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 39506489816 in words is "thirty-nine billion, five hundred six million, four hundred eighty-nine thousand, eight hundred sixteen".