23897523456 has 108 divisors (see below), whose sum is σ = 68993002260. Its totient is φ = 7955374080.

The previous prime is 23897523451. The next prime is 23897523491. The reversal of 23897523456 is 65432579832.

23897523456 is a `hidden beast` number, since 23 + 8 + 97 + 523 + 4 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10571129856 + 13326393600 = 102816^2 + 115440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23897523451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1857526 + ... + 1870346.

It is an arithmetic number, because the mean of its divisors is an integer number (638824095).

Almost surely, 2^23897523456 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 23897523456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34496501130).

23897523456 is an abundant number, since it is smaller than the sum of its proper divisors (45095478804).

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

23897523456 is a wasteful number, since it uses less digits than its factorization.

23897523456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652 (or 13635 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 23897523456 in words is "twenty-three billion, eight hundred ninety-seven million, five hundred twenty-three thousand, four hundred fifty-six".