16923123504 has 160 divisors (see below), whose sum is σ = 55567872000. Its totient is φ = 4830575616.

The previous prime is 16923123443. The next prime is 16923123557. The reversal of 16923123504 is 40532132961.

16923123504 is a `hidden beast` number, since 1 + 6 + 9 + 23 + 123 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4349592 + ... + 4353480.

It is an arithmetic number, because the mean of its divisors is an integer number (347299200).

Almost surely, 2^16923123504 is an apocalyptic number.

16923123504 is a gapful number since it is divisible by the number (14) 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 16923123504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27783936000).

16923123504 is an abundant number, since it is smaller than the sum of its proper divisors (38644748496).

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

16923123504 is a wasteful number, since it uses less digits than its factorization.

16923123504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 16923123504 in words is "sixteen billion, nine hundred twenty-three million, one hundred twenty-three thousand, five hundred four".