23391749072 has 40 divisors (see below), whose sum is σ = 47834988960. Its totient is φ = 11050542720.

The previous prime is 23391749047. The next prime is 23391749099. The reversal of 23391749072 is 27094719332.

It is a super-2 number, since 2×23391749072² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10247 + ... + 216537.

It is an arithmetic number, because the mean of its divisors is an integer number (1195874724).

Almost surely, 2^23391749072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23391749072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23917494480).

23391749072 is an abundant number, since it is smaller than the sum of its proper divisors (24443239888).

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

23391749072 is a wasteful number, since it uses less digits than its factorization.

23391749072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206691 (or 206685 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 23391749072 in words is "twenty-three billion, three hundred ninety-one million, seven hundred forty-nine thousand, seventy-two".