921335645016 has 56 divisors (see below), whose sum is σ = 2590071672780. Its totient is φ = 307111879728.

The previous prime is 921335644991. The next prime is 921335645039. The reversal of 921335645016 is 610546533129.

921335645016 is a `hidden beast` number, since 9 + 2 + 1 + 33 + 564 + 50 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 78983850 + ... + 78995513.

Almost surely, 2^921335645016 is an apocalyptic number.

It is an amenable number.

921335645016 is an abundant number, since it is smaller than the sum of its proper divisors (1668736027764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

921335645016 is a wasteful number, since it uses less digits than its factorization.

921335645016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157979387 (or 157979368 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 921335645016 in words is "nine hundred twenty-one billion, three hundred thirty-five million, six hundred forty-five thousand, sixteen".