220660657055 has 4 divisors (see below), whose sum is σ = 264792788472. Its totient is φ = 176528525640.

The previous prime is 220660657027. The next prime is 220660657093. The reversal of 220660657055 is 550756066022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220660657055 - 2¹⁴ = 220660640671 is a prime.

It is a super-2 number, since 2×220660657055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220660656997 and 220660657015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22066065701 + ... + 22066065710.

It is an arithmetic number, because the mean of its divisors is an integer number (66198197118).

Almost surely, 2^220660657055 is an apocalyptic number.

220660657055 is a deficient number, since it is larger than the sum of its proper divisors (44132131417).

220660657055 is an equidigital number, since it uses as much as digits as its factorization.

220660657055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44132131416.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 220660657055 in words is "two hundred twenty billion, six hundred sixty million, six hundred fifty-seven thousand, fifty-five".