18122671660 has 12 divisors (see below), whose sum is σ = 38057610528. Its totient is φ = 7249068656.

The previous prime is 18122671657. The next prime is 18122671661. The reversal of 18122671660 is 6617622181.

It is not an unprimeable number, because it can be changed into a prime (18122671661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453066772 + ... + 453066811.

It is an arithmetic number, because the mean of its divisors is an integer number (3171467544).

Almost surely, 2^18122671660 is an apocalyptic number.

18122671660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18122671660 is an abundant number, since it is smaller than the sum of its proper divisors (19934938868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18122671660 is a wasteful number, since it uses less digits than its factorization.

18122671660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906133592 (or 906133590 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 18122671660 in words is "eighteen billion, one hundred twenty-two million, six hundred seventy-one thousand, six hundred sixty".