15286865216 has 56 divisors (see below), whose sum is σ = 34812524736. Its totient is φ = 6524282880.

The previous prime is 15286865179. The next prime is 15286865261. The reversal of 15286865216 is 61256868251.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37175 + ... + 178761.

Almost surely, 2^15286865216 is an apocalyptic number.

15286865216 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 15286865216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17406262368).

15286865216 is an abundant number, since it is smaller than the sum of its proper divisors (19525659520).

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

15286865216 is a wasteful number, since it uses less digits than its factorization.

15286865216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141847 (or 141837 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The spelling of 15286865216 in words is "fifteen billion, two hundred eighty-six million, eight hundred sixty-five thousand, two hundred sixteen".