268463464364881 has 2 divisors, whose sum is σ = 268463464364882. Its totient is φ = 268463464364880.

The previous prime is 268463464364831. The next prime is 268463464364891. The reversal of 268463464364881 is 188463464364862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263450522483281 + 5012941881600 = 16231159^2 + 2238960^2 .

It is a cyclic number.

It is not a de Polignac number, because 268463464364881 - 2²⁷ = 268463330147153 is a prime.

It is a super-2 number, since 2×268463464364881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (268463464364831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134231732182440 + 134231732182441.

It is an arithmetic number, because the mean of its divisors is an integer number (134231732182441).

Almost surely, 2^{268463464364881} is an apocalyptic number.

It is an amenable number.

268463464364881 is a deficient number, since it is larger than the sum of its proper divisors (1).

268463464364881 is an equidigital number, since it uses as much as digits as its factorization.

268463464364881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3057647616, while the sum is 73.

The spelling of 268463464364881 in words is "two hundred sixty-eight trillion, four hundred sixty-three billion, four hundred sixty-four million, three hundred sixty-four thousand, eight hundred eighty-one".