921838693312 has 14 divisors (see below), whose sum is σ = 1829273657168. Its totient is φ = 460919346624.

The previous prime is 921838693291. The next prime is 921838693327. The reversal of 921838693312 is 213396838129.

921838693312 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 as a sum of consecutive naturals, namely, 7201864728 + ... + 7201864855.

Almost surely, 2^921838693312 is an apocalyptic number.

It is an amenable number.

921838693312 is a deficient number, since it is larger than the sum of its proper divisors (907434963856).

921838693312 is a wasteful number, since it uses less digits than its factorization.

921838693312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403729595 (or 14403729585 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 55.

The spelling of 921838693312 in words is "nine hundred twenty-one billion, eight hundred thirty-eight million, six hundred ninety-three thousand, three hundred twelve".