23140344440 has 32 divisors (see below), whose sum is σ = 52086510000. Its totient is φ = 9252451584.

The previous prime is 23140344373. The next prime is 23140344463. The reversal of 23140344440 is 4444304132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12365 + ... + 215484.

Almost surely, 2^23140344440 is an apocalyptic number.

23140344440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23140344440 is an abundant number, since it is smaller than the sum of its proper divisors (28946165560).

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

23140344440 is a wasteful number, since it uses less digits than its factorization.

23140344440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230399 (or 230395 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 23140344440 its reverse (4444304132), we get a palindrome (27584648572).

The spelling of 23140344440 in words is "twenty-three billion, one hundred forty million, three hundred forty-four thousand, four hundred forty".