218477285011 has 4 divisors (see below), whose sum is σ = 218793461224. Its totient is φ = 218161108800.

The previous prime is 218477285009. The next prime is 218477285027. The reversal of 218477285011 is 110582774812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 218477285011 - 2¹ = 218477285009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218477285071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158087070 + ... + 158088451.

It is an arithmetic number, because the mean of its divisors is an integer number (54698365306).

Almost surely, 2^218477285011 is an apocalyptic number.

218477285011 is a deficient number, since it is larger than the sum of its proper divisors (316176213).

218477285011 is an equidigital number, since it uses as much as digits as its factorization.

218477285011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316176212.

The product of its (nonzero) digits is 250880, while the sum is 46.

The spelling of 218477285011 in words is "two hundred eighteen billion, four hundred seventy-seven million, two hundred eighty-five thousand, eleven".