18552168688869 has 32 divisors (see below), whose sum is σ = 27528152745600. Its totient is φ = 12348561657600.

The previous prime is 18552168688793. The next prime is 18552168688871. The reversal of 18552168688869 is 96888686125581.

It is a happy number.

18552168688869 is a `hidden beast` number, since 1 + 8 + 5 + 521 + 6 + 8 + 6 + 8 + 8 + 86 + 9 = 666.

It is not a de Polignac number, because 18552168688869 - 2³⁹ = 18002412874981 is a prime.

It is a super-2 number, since 2×18552168688869² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18552168688769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128233837 + ... + 128378429.

It is an arithmetic number, because the mean of its divisors is an integer number (860254773300).

Almost surely, 2^{18552168688869} is an apocalyptic number.

It is an amenable number.

18552168688869 is a deficient number, since it is larger than the sum of its proper divisors (8975984056731).

18552168688869 is a wasteful number, since it uses less digits than its factorization.

18552168688869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152082 (or 152076 counting only the distinct ones).

The product of its digits is 3185049600, while the sum is 81.

The spelling of 18552168688869 in words is "eighteen trillion, five hundred fifty-two billion, one hundred sixty-eight million, six hundred eighty-eight thousand, eight hundred sixty-nine".