23661500320 has 96 divisors (see below), whose sum is σ = 59233337856. Its totient is φ = 8901120000.

The previous prime is 23661500281. The next prime is 23661500323. The reversal of 23661500320 is 2300516632.

It is not an unprimeable number, because it can be changed into a prime (23661500323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4977945 + ... + 4982695.

It is an arithmetic number, because the mean of its divisors is an integer number (617013936).

Almost surely, 2^23661500320 is an apocalyptic number.

23661500320 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 23661500320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29616668928).

23661500320 is an abundant number, since it is smaller than the sum of its proper divisors (35571837536).

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

23661500320 is a wasteful number, since it uses less digits than its factorization.

23661500320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614 (or 6606 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 23661500320 in words is "twenty-three billion, six hundred sixty-one million, five hundred thousand, three hundred twenty".