23409173424 has 160 divisors (see below), whose sum is σ = 74760215040. Its totient is φ = 6146390016.

The previous prime is 23409173413. The next prime is 23409173449. The reversal of 23409173424 is 42437190432.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 979732 + ... + 1003340.

It is an arithmetic number, because the mean of its divisors is an integer number (467251344).

Almost surely, 2^23409173424 is an apocalyptic number.

23409173424 is a gapful number since it is divisible by the number (24) 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 23409173424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37380107520).

23409173424 is an abundant number, since it is smaller than the sum of its proper divisors (51351041616).

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

23409173424 is a wasteful number, since it uses less digits than its factorization.

23409173424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23867 (or 23861 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 23409173424 in words is "twenty-three billion, four hundred nine million, one hundred seventy-three thousand, four hundred twenty-four".