655267842919 has 2 divisors, whose sum is σ = 655267842920. Its totient is φ = 655267842918.

The previous prime is 655267842917. The next prime is 655267842923. The reversal of 655267842919 is 919248762556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655267842919 - 2¹ = 655267842917 is a prime.

It is a super-2 number, since 2×655267842919² (a number of 24 digits) contains 22 as substring.

Together with 655267842917, 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 (655267842917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327633921459 + 327633921460.

It is an arithmetic number, because the mean of its divisors is an integer number (327633921460).

Almost surely, 2^655267842919 is an apocalyptic number.

655267842919 is a deficient number, since it is larger than the sum of its proper divisors (1).

655267842919 is an equidigital number, since it uses as much as digits as its factorization.

655267842919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 64.

The spelling of 655267842919 in words is "six hundred fifty-five billion, two hundred sixty-seven million, eight hundred forty-two thousand, nine hundred nineteen".