1265668151263 has 2 divisors, whose sum is σ = 1265668151264. Its totient is φ = 1265668151262.

The previous prime is 1265668151261. The next prime is 1265668151273. The reversal of 1265668151263 is 3621518665621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265668151263 - 2¹ = 1265668151261 is a prime.

Together with 1265668151261, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1265668151263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265668151261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632834075631 + 632834075632.

It is an arithmetic number, because the mean of its divisors is an integer number (632834075632).

Almost surely, 2^{1265668151263} is an apocalyptic number.

1265668151263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265668151263 is an equidigital number, since it uses as much as digits as its factorization.

1265668151263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 52.

The spelling of 1265668151263 in words is "one trillion, two hundred sixty-five billion, six hundred sixty-eight million, one hundred fifty-one thousand, two hundred sixty-three".