220656057365 has 4 divisors (see below), whose sum is σ = 264787268844. Its totient is φ = 176524845888.

The previous prime is 220656057317. The next prime is 220656057367. The reversal of 220656057365 is 563750656022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563750656022 = 2 ⋅281875328011.

It can be written as a sum of positive squares in 2 ways, for example, as 175695943921 + 44960113444 = 419161^2 + 212038^2 .

It is a cyclic number.

It is not a de Polignac number, because 220656057365 - 2¹⁴ = 220656040981 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 (220656057367) 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, 22065605732 + ... + 22065605741.

It is an arithmetic number, because the mean of its divisors is an integer number (66196817211).

Almost surely, 2^220656057365 is an apocalyptic number.

It is an amenable number.

220656057365 is a deficient number, since it is larger than the sum of its proper divisors (44131211479).

220656057365 is an equidigital number, since it uses as much as digits as its factorization.

220656057365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44131211478.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 220656057365 in words is "two hundred twenty billion, six hundred fifty-six million, fifty-seven thousand, three hundred sixty-five".