15520550626056 has 96 divisors (see below), whose sum is σ = 45152953778880. Its totient is φ = 4432806403200.

The previous prime is 15520550626033. The next prime is 15520550626067. The reversal of 15520550626056 is 65062605502551.

It is a super-2 number, since 2×15520550626056² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15520550625996 and 15520550626014.

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, 754026 + ... + 5622246.

It is an arithmetic number, because the mean of its divisors is an integer number (470343268530).

Almost surely, 2^{15520550626056} 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 15520550626056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22576476889440).

15520550626056 is an abundant number, since it is smaller than the sum of its proper divisors (29632403152824).

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

15520550626056 is a wasteful number, since it uses less digits than its factorization.

15520550626056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870955 (or 4870944 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 15520550626056 in words is "fifteen trillion, five hundred twenty billion, five hundred fifty million, six hundred twenty-six thousand, fifty-six".