921323712960 has 448 divisors, whose sum is σ = 3751345751040. Its totient is φ = 208501862400.

The previous prime is 921323712949. The next prime is 921323712979. The reversal of 921323712960 is 69217323129.

921323712960 is a `hidden beast` number, since 9 + 213 + 2 + 371 + 2 + 9 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6033067 + ... + 6183893.

Almost surely, 2^921323712960 is an apocalyptic number.

921323712960 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921323712960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875672875520).

921323712960 is an abundant number, since it is smaller than the sum of its proper divisors (2830022038080).

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

921323712960 is a wasteful number, since it uses less digits than its factorization.

921323712960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150961 (or 150945 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 921323712960 in words is "nine hundred twenty-one billion, three hundred twenty-three million, seven hundred twelve thousand, nine hundred sixty".