23890655544 has 128 divisors (see below), whose sum is σ = 69106452480. Its totient is φ = 6741504000.

The previous prime is 23890655531. The next prime is 23890655623. The reversal of 23890655544 is 44555609832.

It is a happy number.

It is a congruent number.

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, 7854664 + ... + 7857704.

It is an arithmetic number, because the mean of its divisors is an integer number (539894160).

Almost surely, 2^23890655544 is an apocalyptic number.

23890655544 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 23890655544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34553226240).

23890655544 is an abundant number, since it is smaller than the sum of its proper divisors (45215796936).

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

23890655544 is a wasteful number, since it uses less digits than its factorization.

23890655544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 23890655544 in words is "twenty-three billion, eight hundred ninety million, six hundred fifty-five thousand, five hundred forty-four".