220256160261 has 16 divisors (see below), whose sum is σ = 304898390400. Its totient is φ = 141262244928.

The previous prime is 220256160251. The next prime is 220256160317. The reversal of 220256160261 is 162061652022.

It is not a de Polignac number, because 220256160261 - 2⁷ = 220256160133 is a prime.

It is a super-3 number, since 3×220256160261³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220256160251) 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, 4545721 + ... + 4593918.

It is an arithmetic number, because the mean of its divisors is an integer number (19056149400).

Almost surely, 2^220256160261 is an apocalyptic number.

It is an amenable number.

220256160261 is a deficient number, since it is larger than the sum of its proper divisors (84642230139).

220256160261 is a wasteful number, since it uses less digits than its factorization.

220256160261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139948.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 220256160261 in words is "two hundred twenty billion, two hundred fifty-six million, one hundred sixty thousand, two hundred sixty-one".