220566806601701 has 4 divisors (see below), whose sum is σ = 252076350401952. Its totient is φ = 189057262801452.

The previous prime is 220566806601689. The next prime is 220566806601703. The reversal of 220566806601701 is 107106608665022.

220566806601701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 220566806601701 - 2¹⁰ = 220566806600677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220566806601701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220566806601703) 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, 15754771900115 + ... + 15754771900128.

It is an arithmetic number, because the mean of its divisors is an integer number (63019087600488).

Almost surely, 2^{220566806601701} is an apocalyptic number.

It is an amenable number.

220566806601701 is a deficient number, since it is larger than the sum of its proper divisors (31509543800251).

220566806601701 is an equidigital number, since it uses as much as digits as its factorization.

220566806601701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31509543800250.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 220566806601701 in words is "two hundred twenty trillion, five hundred sixty-six billion, eight hundred six million, six hundred one thousand, seven hundred one".