18566811480722 has 16 divisors (see below), whose sum is σ = 27926358949440. Its totient is φ = 9258040519728.

The previous prime is 18566811480703. The next prime is 18566811480727. The reversal of 18566811480722 is 22708411866581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18566811480727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417913 + ... + 6256524.

It is an arithmetic number, because the mean of its divisors is an integer number (1745397434340).

Almost surely, 2^{18566811480722} is an apocalyptic number.

18566811480722 is a deficient number, since it is larger than the sum of its proper divisors (9359547468718).

18566811480722 is a wasteful number, since it uses less digits than its factorization.

18566811480722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677745.

The product of its (nonzero) digits is 10321920, while the sum is 59.

The spelling of 18566811480722 in words is "eighteen trillion, five hundred sixty-six billion, eight hundred eleven million, four hundred eighty thousand, seven hundred twenty-two".