15440240012252 has 48 divisors (see below), whose sum is σ = 30497658347520. Its totient is φ = 6775304356800.

The previous prime is 15440240012237. The next prime is 15440240012311. The reversal of 15440240012252 is 25221004204451.

It is a super-2 number, since 2×15440240012252² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8021477 + ... + 9758307.

It is an arithmetic number, because the mean of its divisors is an integer number (635367882240).

Almost surely, 2^{15440240012252} is an apocalyptic number.

It is an amenable number.

15440240012252 is a deficient number, since it is larger than the sum of its proper divisors (15057418335268).

15440240012252 is a wasteful number, since it uses less digits than its factorization.

15440240012252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743842 (or 1743840 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The spelling of 15440240012252 in words is "fifteen trillion, four hundred forty billion, two hundred forty million, twelve thousand, two hundred fifty-two".