350564498821 has 2 divisors, whose sum is σ = 350564498822. Its totient is φ = 350564498820.

The previous prime is 350564498783. The next prime is 350564498873. The reversal of 350564498821 is 128894465053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350073388900 + 491109921 = 591670^2 + 22161^2 .

It is a cyclic number.

It is not a de Polignac number, because 350564498821 - 2⁷ = 350564498693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350564498891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175282249410 + 175282249411.

It is an arithmetic number, because the mean of its divisors is an integer number (175282249411).

Almost surely, 2^350564498821 is an apocalyptic number.

It is an amenable number.

350564498821 is a deficient number, since it is larger than the sum of its proper divisors (1).

350564498821 is an equidigital number, since it uses as much as digits as its factorization.

350564498821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 350564498821 in words is "three hundred fifty billion, five hundred sixty-four million, four hundred ninety-eight thousand, eight hundred twenty-one".