1268895068977 has 2 divisors, whose sum is σ = 1268895068978. Its totient is φ = 1268895068976.

The previous prime is 1268895068957. The next prime is 1268895068989. The reversal of 1268895068977 is 7798605988621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249754069776 + 19140999201 = 1117924^2 + 138351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1268895068977 is a prime.

It is a super-2 number, since 2×1268895068977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1268895068957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634447534488 + 634447534489.

It is an arithmetic number, because the mean of its divisors is an integer number (634447534489).

Almost surely, 2^{1268895068977} is an apocalyptic number.

It is an amenable number.

1268895068977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268895068977 is an equidigital number, since it uses as much as digits as its factorization.

1268895068977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 731566080, while the sum is 76.

The spelling of 1268895068977 in words is "one trillion, two hundred sixty-eight billion, eight hundred ninety-five million, sixty-eight thousand, nine hundred seventy-seven".