921339643233 has 16 divisors (see below), whose sum is σ = 1257051350016. Its totient is φ = 599927860560.

The previous prime is 921339643177. The next prime is 921339643241. The reversal of 921339643233 is 332346933129.

It is not a de Polignac number, because 921339643233 - 2¹⁷ = 921339512161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (921339623233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10118716 + ... + 10209362.

It is an arithmetic number, because the mean of its divisors is an integer number (78565709376).

Almost surely, 2^921339643233 is an apocalyptic number.

It is an amenable number.

921339643233 is a deficient number, since it is larger than the sum of its proper divisors (335711706783).

921339643233 is a wasteful number, since it uses less digits than its factorization.

921339643233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169484.

The product of its digits is 1889568, while the sum is 48.

The spelling of 921339643233 in words is "nine hundred twenty-one billion, three hundred thirty-nine million, six hundred forty-three thousand, two hundred thirty-three".