23133550540 has 48 divisors (see below), whose sum is σ = 49964058144. Its totient is φ = 8991680000.

The previous prime is 23133550537. The next prime is 23133550579. The reversal of 23133550540 is 4505533132.

It is a super-2 number, since 2×23133550540² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149622 + ... + 262018.

It is an arithmetic number, because the mean of its divisors is an integer number (1040917878).

Almost surely, 2^23133550540 is an apocalyptic number.

23133550540 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 23133550540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24982029072).

23133550540 is an abundant number, since it is smaller than the sum of its proper divisors (26830507604).

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

23133550540 is a wasteful number, since it uses less digits than its factorization.

23133550540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112698 (or 112696 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 23133550540 in words is "twenty-three billion, one hundred thirty-three million, five hundred fifty thousand, five hundred forty".