655399722349 has 2 divisors, whose sum is σ = 655399722350. Its totient is φ = 655399722348.

The previous prime is 655399722347. The next prime is 655399722379. The reversal of 655399722349 is 943227993556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618610564324 + 36789158025 = 786518^2 + 191805^2 .

It is a cyclic number.

It is not a de Polignac number, because 655399722349 - 2¹ = 655399722347 is a prime.

Together with 655399722347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655399722347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327699861174 + 327699861175.

It is an arithmetic number, because the mean of its divisors is an integer number (327699861175).

Almost surely, 2^655399722349 is an apocalyptic number.

It is an amenable number.

655399722349 is a deficient number, since it is larger than the sum of its proper divisors (1).

655399722349 is an equidigital number, since it uses as much as digits as its factorization.

655399722349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110224800, while the sum is 64.

The spelling of 655399722349 in words is "six hundred fifty-five billion, three hundred ninety-nine million, seven hundred twenty-two thousand, three hundred forty-nine".