15556665152 has 112 divisors (see below), whose sum is σ = 36300655872. Its totient is φ = 6476820480.

The previous prime is 15556665149. The next prime is 15556665253. The reversal of 15556665152 is 25156665551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 15556665097 and 15556665106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2442452 + ... + 2448812.

Almost surely, 2^15556665152 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 15556665152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18150327936).

15556665152 is an abundant number, since it is smaller than the sum of its proper divisors (20743990720).

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

15556665152 is a wasteful number, since it uses less digits than its factorization.

15556665152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536 (or 6526 counting only the distinct ones).

The product of its digits is 1350000, while the sum is 47.

The spelling of 15556665152 in words is "fifteen billion, five hundred fifty-six million, six hundred sixty-five thousand, one hundred fifty-two".