1520416663349 has 2 divisors, whose sum is σ = 1520416663350. Its totient is φ = 1520416663348.

The previous prime is 1520416663309. The next prime is 1520416663379. The reversal of 1520416663349 is 9433666140251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902534200324 + 617882463025 = 950018^2 + 786055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520416663349 - 2²⁸ = 1520148227893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1520416663297 and 1520416663306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520416663309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760208331674 + 760208331675.

It is an arithmetic number, because the mean of its divisors is an integer number (760208331675).

Almost surely, 2^{1520416663349} is an apocalyptic number.

It is an amenable number.

1520416663349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520416663349 is an equidigital number, since it uses as much as digits as its factorization.

1520416663349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 1520416663349 in words is "one trillion, five hundred twenty billion, four hundred sixteen million, six hundred sixty-three thousand, three hundred forty-nine".