838761633616 has 40 divisors (see below), whose sum is σ = 1647510783464. Its totient is φ = 413598597120.

The previous prime is 838761633571. The next prime is 838761633769. The reversal of 838761633616 is 616336167838.

It can be written as a sum of positive squares in 4 ways, for example, as 74529000000 + 764232633616 = 273000^2 + 874204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16584880 + ... + 16635376.

Almost surely, 2^838761633616 is an apocalyptic number.

It is an amenable number.

838761633616 is a deficient number, since it is larger than the sum of its proper divisors (808749149848).

838761633616 is a wasteful number, since it uses less digits than its factorization.

838761633616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64799 (or 64793 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 58.

The spelling of 838761633616 in words is "eight hundred thirty-eight billion, seven hundred sixty-one million, six hundred thirty-three thousand, six hundred sixteen".