23291218560 has 256 divisors, whose sum is σ = 78812870400. Its totient is φ = 5830410240.

The previous prime is 23291218487. The next prime is 23291218591. The reversal of 23291218560 is 6581219232.

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, 17657581 + ... + 17658899.

It is an arithmetic number, because the mean of its divisors is an integer number (307862775).

Almost surely, 2^23291218560 is an apocalyptic number.

23291218560 is a gapful number since it is divisible by the number (20) 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 23291218560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39406435200).

23291218560 is an abundant number, since it is smaller than the sum of its proper divisors (55521651840).

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

23291218560 is a wasteful number, since it uses less digits than its factorization.

23291218560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 23291218560 in words is "twenty-three billion, two hundred ninety-one million, two hundred eighteen thousand, five hundred sixty".