23105413440 has 168 divisors, whose sum is σ = 79792116768. Its totient is φ = 6136704000.

The previous prime is 23105413411. The next prime is 23105413453. The reversal of 23105413440 is 4431450132.

It is a happy number.

23105413440 is a `hidden beast` number, since 2 + 310 + 5 + 4 + 1 + 344 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706899 + ... + 738861.

It is an arithmetic number, because the mean of its divisors is an integer number (474953076).

Almost surely, 2^23105413440 is an apocalyptic number.

23105413440 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 23105413440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39896058384).

23105413440 is an abundant number, since it is smaller than the sum of its proper divisors (56686703328).

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

23105413440 is a wasteful number, since it uses less digits than its factorization.

23105413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32237 (or 32224 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 23105413440 its reverse (4431450132), we get a palindrome (27536863572).

The spelling of 23105413440 in words is "twenty-three billion, one hundred five million, four hundred thirteen thousand, four hundred forty".