15244040056 has 64 divisors (see below), whose sum is σ = 33232872960. Its totient is φ = 6419952000.

The previous prime is 15244040051. The next prime is 15244040083. The reversal of 15244040056 is 65004044251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15244040051) 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, 6595141 + ... + 6597451.

It is an arithmetic number, because the mean of its divisors is an integer number (519263640).

Almost surely, 2^15244040056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15244040056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16616436480).

15244040056 is an abundant number, since it is smaller than the sum of its proper divisors (17988832904).

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

15244040056 is a wasteful number, since it uses less digits than its factorization.

15244040056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 15244040056 in words is "fifteen billion, two hundred forty-four million, forty thousand, fifty-six".