218420573269 has 16 divisors (see below), whose sum is σ = 225348177600. Its totient is φ = 211549117824.

The previous prime is 218420573207. The next prime is 218420573281. The reversal of 218420573269 is 962375024812.

It is a happy number.

It is not a de Polignac number, because 218420573269 - 2²¹ = 218418476117 is a prime.

It is a super-2 number, since 2×218420573269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218420574269) 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, 7224817 + ... + 7254985.

It is an arithmetic number, because the mean of its divisors is an integer number (14084261100).

It is a 1-persistent number, because it is pandigital, but 2⋅218420573269 = 436841146538 is not.

Almost surely, 2^218420573269 is an apocalyptic number.

It is an amenable number.

218420573269 is a deficient number, since it is larger than the sum of its proper divisors (6927604331).

218420573269 is a wasteful number, since it uses less digits than its factorization.

218420573269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31092.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 218420573269 in words is "two hundred eighteen billion, four hundred twenty million, five hundred seventy-three thousand, two hundred sixty-nine".