15778850568 has 64 divisors (see below), whose sum is σ = 42578659200. Its totient is φ = 4843929600.

The previous prime is 15778850531. The next prime is 15778850587. The reversal of 15778850568 is 86505887751.

15778850568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79368 + ... + 194568.

It is an arithmetic number, because the mean of its divisors is an integer number (665291550).

Almost surely, 2^15778850568 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 15778850568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21289329600).

15778850568 is an abundant number, since it is smaller than the sum of its proper divisors (26799808632).

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

15778850568 is a wasteful number, since it uses less digits than its factorization.

15778850568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115662 (or 115658 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 60.

The spelling of 15778850568 in words is "fifteen billion, seven hundred seventy-eight million, eight hundred fifty thousand, five hundred sixty-eight".