15810680068 has 24 divisors (see below), whose sum is σ = 29422024632. Its totient is φ = 7408379904.

The previous prime is 15810680057. The next prime is 15810680069. The reversal of 15810680068 is 86008601851.

It is a happy number.

15810680068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2596717764 + 13213962304 = 50958^2 + 114952^2 .

It is not an unprimeable number, because it can be changed into a prime (15810680069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 483105 + ... + 514792.

It is an arithmetic number, because the mean of its divisors is an integer number (1225917693).

Almost surely, 2^15810680068 is an apocalyptic number.

It is an amenable number.

15810680068 is a deficient number, since it is larger than the sum of its proper divisors (13611344564).

15810680068 is a wasteful number, since it uses less digits than its factorization.

15810680068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998151 (or 998149 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 15810680068 in words is "fifteen billion, eight hundred ten million, six hundred eighty thousand, sixty-eight".