18571193348468 has 6 divisors (see below), whose sum is σ = 32499588359826. Its totient is φ = 9285596674232.

The previous prime is 18571193348453. The next prime is 18571193348471. The reversal of 18571193348468 is 86484339117581.

It can be written as a sum of positive squares in only one way, i.e., 17322726795364 + 1248466553104 = 4162058^2 + 1117348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18571193348398 and 18571193348407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321399168555 + ... + 2321399168562.

It is an arithmetic number, because the mean of its divisors is an integer number (5416598059971).

Almost surely, 2^{18571193348468} is an apocalyptic number.

It is an amenable number.

18571193348468 is a deficient number, since it is larger than the sum of its proper divisors (13928395011358).

18571193348468 is a wasteful number, since it uses less digits than its factorization.

18571193348468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642798337121 (or 4642798337119 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 68.

The spelling of 18571193348468 in words is "eighteen trillion, five hundred seventy-one billion, one hundred ninety-three million, three hundred forty-eight thousand, four hundred sixty-eight".