921608860944 has 40 divisors (see below), whose sum is σ = 2436190870432. Its totient is φ = 300058698240.

The previous prime is 921608860919. The next prime is 921608860951. The reversal of 921608860944 is 449068806129.

It is a super-2 number, since 2×921608860944² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223255897 + ... + 223260024.

Almost surely, 2^921608860944 is an apocalyptic number.

It is an amenable number.

921608860944 is an abundant number, since it is smaller than the sum of its proper divisors (1514582009488).

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

921608860944 is a wasteful number, since it uses less digits than its factorization.

921608860944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446515975 (or 446515969 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 921608860944 in words is "nine hundred twenty-one billion, six hundred eight million, eight hundred sixty thousand, nine hundred forty-four".