18579162687137 has 4 divisors (see below), whose sum is σ = 20008329047700. Its totient is φ = 17149996326576.

The previous prime is 18579162687133. The next prime is 18579162687167. The reversal of 18579162687137 is 73178626197581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3398975264161 + 15180187422976 = 1843631^2 + 3896176^2 .

It is a cyclic number.

It is not a de Polignac number, because 18579162687137 - 2² = 18579162687133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18579162687131) 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, 714583180262 + ... + 714583180287.

It is an arithmetic number, because the mean of its divisors is an integer number (5002082261925).

Almost surely, 2^{18579162687137} is an apocalyptic number.

It is an amenable number.

18579162687137 is a deficient number, since it is larger than the sum of its proper divisors (1429166360563).

18579162687137 is a wasteful number, since it uses less digits than its factorization.

18579162687137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429166360562.

The product of its digits is 213373440, while the sum is 71.

The spelling of 18579162687137 in words is "eighteen trillion, five hundred seventy-nine billion, one hundred sixty-two million, six hundred eighty-seven thousand, one hundred thirty-seven".