268321931726911 has 2 divisors, whose sum is σ = 268321931726912. Its totient is φ = 268321931726910.

The previous prime is 268321931726843. The next prime is 268321931726987. The reversal of 268321931726911 is 119627139123862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268321931726911 - 2⁹ = 268321931726399 is a prime.

It is a super-2 number, since 2×268321931726911² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268321931726911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268321931726311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134160965863455 + 134160965863456.

It is an arithmetic number, because the mean of its divisors is an integer number (134160965863456).

Almost surely, 2^{268321931726911} is an apocalyptic number.

268321931726911 is a deficient number, since it is larger than the sum of its proper divisors (1).

268321931726911 is an equidigital number, since it uses as much as digits as its factorization.

268321931726911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 61.

The spelling of 268321931726911 in words is "two hundred sixty-eight trillion, three hundred twenty-one billion, nine hundred thirty-one million, seven hundred twenty-six thousand, nine hundred eleven".