18546822697 has 12 divisors (see below), whose sum is σ = 21140262480. Its totient is φ = 16219081008.

The previous prime is 18546822691. The next prime is 18546822709. The reversal of 18546822697 is 79622864581.

It is a de Polignac number, because none of the positive numbers 2^k-18546822697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18546822691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2884803 + ... + 2891224.

It is an arithmetic number, because the mean of its divisors is an integer number (1761688540).

Almost surely, 2^18546822697 is an apocalyptic number.

It is an amenable number.

18546822697 is a deficient number, since it is larger than the sum of its proper divisors (2593439783).

18546822697 is a wasteful number, since it uses less digits than its factorization.

18546822697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776072 (or 5776059 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

The spelling of 18546822697 in words is "eighteen billion, five hundred forty-six million, eight hundred twenty-two thousand, six hundred ninety-seven".