15887883648 has 256 divisors, whose sum is σ = 52145533440. Its totient is φ = 4173742080.

The previous prime is 15887883631. The next prime is 15887883659. The reversal of 15887883648 is 84638878851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10727068 + ... + 10728548.

It is an arithmetic number, because the mean of its divisors is an integer number (203693490).

Almost surely, 2^15887883648 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 15887883648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26072766720).

15887883648 is an abundant number, since it is smaller than the sum of its proper divisors (36257649792).

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

15887883648 is a wasteful number, since it uses less digits than its factorization.

15887883648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1813 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 66.

The spelling of 15887883648 in words is "fifteen billion, eight hundred eighty-seven million, eight hundred eighty-three thousand, six hundred forty-eight".