23252215550440 has 64 divisors (see below), whose sum is σ = 56892145899600. Its totient is φ = 8517186736128.

The previous prime is 23252215550353. The next prime is 23252215550449. The reversal of 23252215550440 is 4405551225232.

It can be written as a sum of positive squares in 8 ways, for example, as 20796682674244 + 2455532876196 = 4560338^2 + 1567014^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 23252215550393 and 23252215550402.

It is not an unprimeable number, because it can be changed into a prime (23252215550449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462061795 + ... + 462112114.

Almost surely, 2^{23252215550440} is an apocalyptic number.

23252215550440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23252215550440 is an abundant number, since it is smaller than the sum of its proper divisors (33639930349160).

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

23252215550440 is a wasteful number, since it uses less digits than its factorization.

23252215550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924173974 (or 924173970 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 23252215550440 its reverse (4405551225232), we get a palindrome (27657766775672).

The spelling of 23252215550440 in words is "twenty-three trillion, two hundred fifty-two billion, two hundred fifteen million, five hundred fifty thousand, four hundred forty".