1266952372919 has 2 divisors, whose sum is σ = 1266952372920. Its totient is φ = 1266952372918.

The previous prime is 1266952372913. The next prime is 1266952372921. The reversal of 1266952372919 is 9192732596621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266952372919 is a prime.

It is a super-2 number, since 2×1266952372919² (a number of 25 digits) contains 22 as substring.

Together with 1266952372921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266952372913) 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, 633476186459 + 633476186460.

It is an arithmetic number, because the mean of its divisors is an integer number (633476186460).

Almost surely, 2^{1266952372919} is an apocalyptic number.

1266952372919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266952372919 is an equidigital number, since it uses as much as digits as its factorization.

1266952372919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 62.

The spelling of 1266952372919 in words is "one trillion, two hundred sixty-six billion, nine hundred fifty-two million, three hundred seventy-two thousand, nine hundred nineteen".