220685776081 has 8 divisors (see below), whose sum is σ = 221849944704. Its totient is φ = 219521821440.

The previous prime is 220685776061. The next prime is 220685776109. The reversal of 220685776081 is 180677586022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220685776081 - 2²⁵ = 220652221649 is a prime.

It is a super-2 number, since 2×220685776081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220685776061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2282340 + ... + 2377066.

It is an arithmetic number, because the mean of its divisors is an integer number (27731243088).

Almost surely, 2^220685776081 is an apocalyptic number.

It is an amenable number.

220685776081 is a deficient number, since it is larger than the sum of its proper divisors (1164168623).

220685776081 is a wasteful number, since it uses less digits than its factorization.

220685776081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106991.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 220685776081 in words is "two hundred twenty billion, six hundred eighty-five million, seven hundred seventy-six thousand, eighty-one".