349993656757 has 2 divisors, whose sum is σ = 349993656758. Its totient is φ = 349993656756.

The previous prime is 349993656751. The next prime is 349993656821. The reversal of 349993656757 is 757656399943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329190210001 + 20803446756 = 573751^2 + 144234^2 .

It is an emirp because it is prime and its reverse (757656399943) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349993656757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 349993656757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349993656751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174996828378 + 174996828379.

It is an arithmetic number, because the mean of its divisors is an integer number (174996828379).

Almost surely, 2^349993656757 is an apocalyptic number.

It is an amenable number.

349993656757 is a deficient number, since it is larger than the sum of its proper divisors (1).

349993656757 is an equidigital number, since it uses as much as digits as its factorization.

349993656757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1157360400, while the sum is 73.

The spelling of 349993656757 in words is "three hundred forty-nine billion, nine hundred ninety-three million, six hundred fifty-six thousand, seven hundred fifty-seven".