220554323545 has 32 divisors (see below), whose sum is σ = 289487810304. Its totient is φ = 160826265600.

The previous prime is 220554323537. The next prime is 220554323551. The reversal of 220554323545 is 545323455022.

It is not a de Polignac number, because 220554323545 - 2³ = 220554323537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220554323498 and 220554323507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341176 + ... + 746665.

It is an arithmetic number, because the mean of its divisors is an integer number (9046494072).

Almost surely, 2^220554323545 is an apocalyptic number.

It is an amenable number.

220554323545 is a deficient number, since it is larger than the sum of its proper divisors (68933486759).

220554323545 is a wasteful number, since it uses less digits than its factorization.

220554323545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087953.

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 220554323545 its reverse (545323455022), we get a palindrome (765877778567).

The spelling of 220554323545 in words is "two hundred twenty billion, five hundred fifty-four million, three hundred twenty-three thousand, five hundred forty-five".