18374347879688 has 16 divisors (see below), whose sum is σ = 34451961427500. Its totient is φ = 9187158165696.

The previous prime is 18374347879687. The next prime is 18374347879711. The reversal of 18374347879688 is 88697874347381.

It can be written as a sum of positive squares in 2 ways, for example, as 17560776351364 + 813571528324 = 4190558^2 + 901982^2 .

It is not an unprimeable number, because it can be changed into a prime (18374347879681) 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, 4066538 + ... + 7299686.

Almost surely, 2^{18374347879688} is an apocalyptic number.

It is an amenable number.

18374347879688 is a deficient number, since it is larger than the sum of its proper divisors (16077613547812).

18374347879688 is a wasteful number, since it uses less digits than its factorization.

18374347879688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943544 (or 3943540 counting only the distinct ones).

The product of its digits is 10924720128, while the sum is 83.

The spelling of 18374347879688 in words is "eighteen trillion, three hundred seventy-four billion, three hundred forty-seven million, eight hundred seventy-nine thousand, six hundred eighty-eight".