18222195677 has 16 divisors (see below), whose sum is σ = 21787218432. Its totient is φ = 14913847680.

The previous prime is 18222195631. The next prime is 18222195683. The reversal of 18222195677 is 77659122281.

It is a cyclic number.

It is not a de Polignac number, because 18222195677 - 2⁸ = 18222195421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222194677) 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 15 ways as a sum of consecutive naturals, for example, 661958 + ... + 688935.

It is an arithmetic number, because the mean of its divisors is an integer number (1361701152).

Almost surely, 2^18222195677 is an apocalyptic number.

It is an amenable number.

18222195677 is a deficient number, since it is larger than the sum of its proper divisors (3565022755).

18222195677 is a wasteful number, since it uses less digits than its factorization.

18222195677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350988.

The product of its digits is 846720, while the sum is 50.

The spelling of 18222195677 in words is "eighteen billion, two hundred twenty-two million, one hundred ninety-five thousand, six hundred seventy-seven".