23133441440 has 24 divisors (see below), whose sum is σ = 54652755780. Its totient is φ = 9253376512.

The previous prime is 23133441427. The next prime is 23133441451. The reversal of 23133441440 is 4414433132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21572559376 + 1560882064 = 146876^2 + 39508^2 .

It is a super-2 number, since 2×23133441440² (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 3 ways as a sum of consecutive naturals, for example, 72291845 + ... + 72292164.

Almost surely, 2^23133441440 is an apocalyptic number.

23133441440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23133441440 is an abundant number, since it is smaller than the sum of its proper divisors (31519314340).

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

23133441440 is a wasteful number, since it uses less digits than its factorization.

23133441440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144584024 (or 144584016 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 23133441440 its reverse (4414433132), we get a palindrome (27547874572).

The spelling of 23133441440 in words is "twenty-three billion, one hundred thirty-three million, four hundred forty-one thousand, four hundred forty".