220412542657 has 2 divisors, whose sum is σ = 220412542658. Its totient is φ = 220412542656.

The previous prime is 220412542633. The next prime is 220412542687. The reversal of 220412542657 is 756245214022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154976856241 + 65435686416 = 393671^2 + 255804^2 .

It is a cyclic number.

It is not a de Polignac number, because 220412542657 - 2¹⁹ = 220412018369 is a prime.

It is not a weakly prime, because it can be changed into another prime (220412542687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110206271328 + 110206271329.

It is an arithmetic number, because the mean of its divisors is an integer number (110206271329).

Almost surely, 2^220412542657 is an apocalyptic number.

It is an amenable number.

220412542657 is a deficient number, since it is larger than the sum of its proper divisors (1).

220412542657 is an equidigital number, since it uses as much as digits as its factorization.

220412542657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

Adding to 220412542657 its reverse (756245214022), we get a palindrome (976657756679).

The spelling of 220412542657 in words is "two hundred twenty billion, four hundred twelve million, five hundred forty-two thousand, six hundred fifty-seven".