218053751807 has 4 divisors (see below), whose sum is σ = 229530265080. Its totient is φ = 206577238536.

The previous prime is 218053751779. The next prime is 218053751827. The reversal of 218053751807 is 708157350812.

It is a happy number.

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 218053751807 - 2²⁴ = 218036974591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218053751827) 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, 5738256608 + ... + 5738256645.

It is an arithmetic number, because the mean of its divisors is an integer number (57382566270).

Almost surely, 2^218053751807 is an apocalyptic number.

218053751807 is a deficient number, since it is larger than the sum of its proper divisors (11476513273).

218053751807 is a wasteful number, since it uses less digits than its factorization.

218053751807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11476513272.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 218053751807 in words is "two hundred eighteen billion, fifty-three million, seven hundred fifty-one thousand, eight hundred seven".