18107820887722 has 16 divisors (see below), whose sum is σ = 28243930042440. Its totient is φ = 8696412813312.

The previous prime is 18107820887701. The next prime is 18107820887773. The reversal of 18107820887722 is 22778802870181.

It can be written as a sum of positive squares in 4 ways, for example, as 17508374858601 + 599446029121 = 4184301^2 + 774239^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808806963 + ... + 808829350.

Almost surely, 2^{18107820887722} is an apocalyptic number.

18107820887722 is a deficient number, since it is larger than the sum of its proper divisors (10136109154718).

18107820887722 is a wasteful number, since it uses less digits than its factorization.

18107820887722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617636537.

The product of its (nonzero) digits is 11239424, while the sum is 61.

The spelling of 18107820887722 in words is "eighteen trillion, one hundred seven billion, eight hundred twenty million, eight hundred eighty-seven thousand, seven hundred twenty-two".