1262616116249 has 2 divisors, whose sum is σ = 1262616116250. Its totient is φ = 1262616116248.

The previous prime is 1262616116239. The next prime is 1262616116273. The reversal of 1262616116249 is 9426116162621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1193949582400 + 68666533849 = 1092680^2 + 262043^2 .

It is an emirp because it is prime and its reverse (9426116162621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1262616116249 - 2⁴⁰ = 163104488473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1262616116239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631308058124 + 631308058125.

It is an arithmetic number, because the mean of its divisors is an integer number (631308058125).

Almost surely, 2^{1262616116249} is an apocalyptic number.

It is an amenable number.

1262616116249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262616116249 is an equidigital number, since it uses as much as digits as its factorization.

1262616116249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The spelling of 1262616116249 in words is "one trillion, two hundred sixty-two billion, six hundred sixteen million, one hundred sixteen thousand, two hundred forty-nine".