218135455299 has 16 divisors (see below), whose sum is σ = 323811280000. Its totient is φ = 145132197768.

The previous prime is 218135455297. The next prime is 218135455393. The reversal of 218135455299 is 992554531812.

218135455299 is a `hidden beast` number, since 2 + 1 + 8 + 1 + 3 + 545 + 5 + 2 + 99 = 666.

218135455299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218135455299 - 2¹ = 218135455297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218135455297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8081809 + ... + 8108754.

It is an arithmetic number, because the mean of its divisors is an integer number (20238205000).

Almost surely, 2^218135455299 is an apocalyptic number.

218135455299 is a deficient number, since it is larger than the sum of its proper divisors (105675824701).

218135455299 is a wasteful number, since it uses less digits than its factorization.

218135455299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16191071 (or 16191065 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The spelling of 218135455299 in words is "two hundred eighteen billion, one hundred thirty-five million, four hundred fifty-five thousand, two hundred ninety-nine".