220135108773 has 4 divisors (see below), whose sum is σ = 293513478368. Its totient is φ = 146756739180.

The previous prime is 220135108769. The next prime is 220135108789. The reversal of 220135108773 is 377801531022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 220135108773 - 2² = 220135108769 is a prime.

It is a super-2 number, since 2×220135108773² (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 (220135108703) 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, 36689184793 + ... + 36689184798.

It is an arithmetic number, because the mean of its divisors is an integer number (73378369592).

Almost surely, 2^220135108773 is an apocalyptic number.

It is an amenable number.

220135108773 is a deficient number, since it is larger than the sum of its proper divisors (73378369595).

220135108773 is an equidigital number, since it uses as much as digits as its factorization.

220135108773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73378369594.

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 220135108773 its reverse (377801531022), we get a palindrome (597936639795).

The spelling of 220135108773 in words is "two hundred twenty billion, one hundred thirty-five million, one hundred eight thousand, seven hundred seventy-three".