39988648436 has 12 divisors (see below), whose sum is σ = 76341965280. Its totient is φ = 18176658360.

The previous prime is 39988648421. The next prime is 39988648499. The reversal of 39988648436 is 63484688993.

39988648436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 454416416 + ... + 454416503.

It is an arithmetic number, because the mean of its divisors is an integer number (6361830440).

Almost surely, 2^39988648436 is an apocalyptic number.

It is an amenable number.

39988648436 is a deficient number, since it is larger than the sum of its proper divisors (36353316844).

39988648436 is a wasteful number, since it uses less digits than its factorization.

39988648436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908832934 (or 908832932 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 68.

The spelling of 39988648436 in words is "thirty-nine billion, nine hundred eighty-eight million, six hundred forty-eight thousand, four hundred thirty-six".