16320331923 has 16 divisors (see below), whose sum is σ = 25338306816. Its totient is φ = 9149942880.

The previous prime is 16320331901. The next prime is 16320331933. The reversal of 16320331923 is 32913302361.

It is not a de Polignac number, because 16320331923 - 2¹⁶ = 16320266387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16320331933) 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, 7330573 + ... + 7332798.

It is an arithmetic number, because the mean of its divisors is an integer number (1583644176).

Almost surely, 2^16320331923 is an apocalyptic number.

16320331923 is a deficient number, since it is larger than the sum of its proper divisors (9017974893).

16320331923 is a wasteful number, since it uses less digits than its factorization.

16320331923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14663434.

The product of its (nonzero) digits is 17496, while the sum is 33.

The spelling of 16320331923 in words is "sixteen billion, three hundred twenty million, three hundred thirty-one thousand, nine hundred twenty-three".