186868135355 has 48 divisors (see below), whose sum is σ = 251802758592. Its totient is φ = 132992428800.

The previous prime is 186868135273. The next prime is 186868135357. The reversal of 186868135355 is 553531868681.

It is not a de Polignac number, because 186868135355 - 2⁸ = 186868135099 is a prime.

It is a super-2 number, since 2×186868135355² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 186868135294 and 186868135303.

It is not an unprimeable number, because it can be changed into a prime (186868135357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7257434 + ... + 7283136.

It is an arithmetic number, because the mean of its divisors is an integer number (5245890804).

Almost surely, 2^186868135355 is an apocalyptic number.

186868135355 is a deficient number, since it is larger than the sum of its proper divisors (64934623237).

186868135355 is a wasteful number, since it uses less digits than its factorization.

186868135355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25988 (or 25977 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 59.

It can be divided in two parts, 186868 and 135355, that added together give a palindrome (322223).

The spelling of 186868135355 in words is "one hundred eighty-six billion, eight hundred sixty-eight million, one hundred thirty-five thousand, three hundred fifty-five".