218435142887 has 16 divisors (see below), whose sum is σ = 237714396192. Its totient is φ = 199512163200.

The previous prime is 218435142881. The next prime is 218435142899. The reversal of 218435142887 is 788241534812.

It is a cyclic number.

It is not a de Polignac number, because 218435142887 - 2⁶ = 218435142823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218435142881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098568 + ... + 2200194.

It is an arithmetic number, because the mean of its divisors is an integer number (14857149762).

Almost surely, 2^218435142887 is an apocalyptic number.

218435142887 is a deficient number, since it is larger than the sum of its proper divisors (19279253305).

218435142887 is a wasteful number, since it uses less digits than its factorization.

218435142887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103378.

The product of its digits is 3440640, while the sum is 53.

The spelling of 218435142887 in words is "two hundred eighteen billion, four hundred thirty-five million, one hundred forty-two thousand, eight hundred eighty-seven".