15860135680 has 144 divisors (see below), whose sum is σ = 39371560704. Its totient is φ = 6115000320.

The previous prime is 15860135659. The next prime is 15860135719. The reversal of 15860135680 is 8653106851.

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, 12419202 + ... + 12420478.

It is an arithmetic number, because the mean of its divisors is an integer number (273413616).

Almost surely, 2^15860135680 is an apocalyptic number.

15860135680 is a gapful number since it is divisible by the number (10) 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 15860135680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19685780352).

15860135680 is an abundant number, since it is smaller than the sum of its proper divisors (23511425024).

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

15860135680 is a wasteful number, since it uses less digits than its factorization.

15860135680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 15860135680 in words is "fifteen billion, eight hundred sixty million, one hundred thirty-five thousand, six hundred eighty".