220777261061117 has 8 divisors (see below), whose sum is σ = 220818501440856. Its totient is φ = 220736021814592.

The previous prime is 220777261061051. The next prime is 220777261061129. The reversal of 220777261061117 is 711160162777022.

It can be written as a sum of positive squares in 4 ways, for example, as 162585476311801 + 58191784749316 = 12750901^2 + 7628354^2 .

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 220777261061117 - 2²⁸ = 220776992625661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220777261061417) 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, 457805963 + ... + 458287959.

It is an arithmetic number, because the mean of its divisors is an integer number (27602312680107).

Almost surely, 2^{220777261061117} is an apocalyptic number.

It is an amenable number.

220777261061117 is a deficient number, since it is larger than the sum of its proper divisors (41240379739).

220777261061117 is an equidigital number, since it uses as much as digits as its factorization.

220777261061117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566607.

The product of its (nonzero) digits is 691488, while the sum is 50.

The spelling of 220777261061117 in words is "two hundred twenty trillion, seven hundred seventy-seven billion, two hundred sixty-one million, sixty-one thousand, one hundred seventeen".