115051201218 has 24 divisors (see below), whose sum is σ = 249284536956. Its totient is φ = 38349333600.

The previous prime is 115051201211. The next prime is 115051201247. The reversal of 115051201218 is 812102150511.

115051201218 is a `hidden beast` number, since 11 + 505 + 1 + 20 + 121 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 112998839409 + 2052361809 = 336153^2 + 45303^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 115051201191 and 115051201200.

It is not an unprimeable number, because it can be changed into a prime (115051201211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 836488 + ... + 964268.

Almost surely, 2^115051201218 is an apocalyptic number.

115051201218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

115051201218 is an abundant number, since it is smaller than the sum of its proper divisors (134233335738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115051201218 is a wasteful number, since it uses less digits than its factorization.

115051201218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177810 (or 177807 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 27.

Adding to 115051201218 its reverse (812102150511), we get a palindrome (927153351729).

The spelling of 115051201218 in words is "one hundred fifteen billion, fifty-one million, two hundred one thousand, two hundred eighteen".