349555478719 has 2 divisors, whose sum is σ = 349555478720. Its totient is φ = 349555478718.

The previous prime is 349555478639. The next prime is 349555478743. The reversal of 349555478719 is 917874555943.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349555478719 is a prime.

It is a super-2 number, since 2×349555478719² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349555478749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174777739359 + 174777739360.

It is an arithmetic number, because the mean of its divisors is an integer number (174777739360).

Almost surely, 2^349555478719 is an apocalyptic number.

349555478719 is a deficient number, since it is larger than the sum of its proper divisors (1).

349555478719 is an equidigital number, since it uses as much as digits as its factorization.

349555478719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512000, while the sum is 67.

The spelling of 349555478719 in words is "three hundred forty-nine billion, five hundred fifty-five million, four hundred seventy-eight thousand, seven hundred nineteen".