220438417489919 has 4 divisors (see below), whose sum is σ = 222389199945696. Its totient is φ = 218487635034144.

The previous prime is 220438417489891. The next prime is 220438417489931. The reversal of 220438417489919 is 919984714834022.

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 220438417489919 - 2²⁰ = 220438416441343 is a prime.

It is a super-2 number, since 2×220438417489919² (a number of 29 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 (220438417489519) 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, 975391227719 + ... + 975391227944.

It is an arithmetic number, because the mean of its divisors is an integer number (55597299986424).

Almost surely, 2^{220438417489919} is an apocalyptic number.

220438417489919 is a deficient number, since it is larger than the sum of its proper divisors (1950782455777).

220438417489919 is a wasteful number, since it uses less digits than its factorization.

220438417489919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950782455776.

The product of its (nonzero) digits is 250822656, while the sum is 71.

The spelling of 220438417489919 in words is "two hundred twenty trillion, four hundred thirty-eight billion, four hundred seventeen million, four hundred eighty-nine thousand, nine hundred nineteen".