15447841056 has 144 divisors (see below), whose sum is σ = 44774009280. Its totient is φ = 5050805760.

The previous prime is 15447840971. The next prime is 15447841091. The reversal of 15447841056 is 65014874451.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7711351 + ... + 7713353.

It is an arithmetic number, because the mean of its divisors is an integer number (310930620).

Almost surely, 2^15447841056 is an apocalyptic number.

15447841056 is a gapful number since it is divisible by the number (16) 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 15447841056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22387004640).

15447841056 is an abundant number, since it is smaller than the sum of its proper divisors (29326168224).

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

15447841056 is a wasteful number, since it uses less digits than its factorization.

15447841056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 15447841056 in words is "fifteen billion, four hundred forty-seven million, eight hundred forty-one thousand, fifty-six".