18477684122 has 8 divisors (see below), whose sum is σ = 27726750516. Its totient is φ = 9235433952.

The previous prime is 18477684107. The next prime is 18477684131. The reversal of 18477684122 is 22148677481.

It can be written as a sum of positive squares in 2 ways, for example, as 16202489521 + 2275194601 = 127289^2 + 47699^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1697273 + ... + 1708124.

Almost surely, 2^18477684122 is an apocalyptic number.

18477684122 is a deficient number, since it is larger than the sum of its proper divisors (9249066394).

18477684122 is a wasteful number, since it uses less digits than its factorization.

18477684122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408112.

The product of its digits is 1204224, while the sum is 50.

The spelling of 18477684122 in words is "eighteen billion, four hundred seventy-seven million, six hundred eighty-four thousand, one hundred twenty-two".