340954581616949 has 2 divisors, whose sum is σ = 340954581616950. Its totient is φ = 340954581616948.

The previous prime is 340954581616921. The next prime is 340954581617009. The reversal of 340954581616949 is 949616185459043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278838399387025 + 62116182229924 = 16698455^2 + 7881382^2 .

It is an emirp because it is prime and its reverse (949616185459043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340954581616949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340954581646949) 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, 170477290808474 + 170477290808475.

It is an arithmetic number, because the mean of its divisors is an integer number (170477290808475).

Almost surely, 2^{340954581616949} is an apocalyptic number.

It is an amenable number.

340954581616949 is a deficient number, since it is larger than the sum of its proper divisors (1).

340954581616949 is an equidigital number, since it uses as much as digits as its factorization.

340954581616949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1007769600, while the sum is 74.

The spelling of 340954581616949 in words is "three hundred forty trillion, nine hundred fifty-four billion, five hundred eighty-one million, six hundred sixteen thousand, nine hundred forty-nine".