15880255916 has 12 divisors (see below), whose sum is σ = 31760511888. Its totient is φ = 6805823952.

The previous prime is 15880255913. The next prime is 15880255921. The reversal of 15880255916 is 61955208851.

It is a happy number.

15880255916 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (15880255913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283575971 + ... + 283576026.

It is an arithmetic number, because the mean of its divisors is an integer number (2646709324).

Almost surely, 2^15880255916 is an apocalyptic number.

It is an amenable number.

15880255916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15880255916 is a wasteful number, since it uses less digits than its factorization.

15880255916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567152008 (or 567152006 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 50.

The spelling of 15880255916 in words is "fifteen billion, eight hundred eighty million, two hundred fifty-five thousand, nine hundred sixteen".