23921545374 has 64 divisors (see below), whose sum is σ = 55009536000. Its totient is φ = 7697540160.

The previous prime is 23921545331. The next prime is 23921545379. The reversal of 23921545374 is 47354512932.

It is a happy number.

23921545374 is a `hidden beast` number, since 2 + 39 + 2 + 1 + 545 + 3 + 74 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23921545379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 667197 + ... + 702135.

It is an arithmetic number, because the mean of its divisors is an integer number (859524000).

Almost surely, 2^23921545374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23921545374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27504768000).

23921545374 is an abundant number, since it is smaller than the sum of its proper divisors (31087990626).

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

23921545374 is a wasteful number, since it uses less digits than its factorization.

23921545374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35390 (or 35384 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The spelling of 23921545374 in words is "twenty-three billion, nine hundred twenty-one million, five hundred forty-five thousand, three hundred seventy-four".