23133461640 has 256 divisors, whose sum is σ = 74438369280. Its totient is φ = 5737374720.

The previous prime is 23133461623. The next prime is 23133461653. The reversal of 23133461640 is 4616433132.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49964049 + ... + 49964511.

It is an arithmetic number, because the mean of its divisors is an integer number (290774880).

Almost surely, 2^23133461640 is an apocalyptic number.

23133461640 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 23133461640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37219184640).

23133461640 is an abundant number, since it is smaller than the sum of its proper divisors (51304907640).

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

23133461640 is a wasteful number, since it uses less digits than its factorization.

23133461640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 23133461640 its reverse (4616433132), we get a palindrome (27749894772).

The spelling of 23133461640 in words is "twenty-three billion, one hundred thirty-three million, four hundred sixty-one thousand, six hundred forty".