13808155816 has 96 divisors (see below), whose sum is σ = 33145545600. Its totient is φ = 5274097920.

The previous prime is 13808155807. The next prime is 13808155841. The reversal of 13808155816 is 61855180831.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249301 + ... + 299611.

It is an arithmetic number, because the mean of its divisors is an integer number (345266100).

Almost surely, 2^13808155816 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 13808155816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16572772800).

13808155816 is an abundant number, since it is smaller than the sum of its proper divisors (19337389784).

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

13808155816 is a wasteful number, since it uses less digits than its factorization.

13808155816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50379 (or 50362 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The spelling of 13808155816 in words is "thirteen billion, eight hundred eight million, one hundred fifty-five thousand, eight hundred sixteen".