266931098761 has 2 divisors, whose sum is σ = 266931098762. Its totient is φ = 266931098760.

The previous prime is 266931098747. The next prime is 266931098779. The reversal of 266931098761 is 167890139662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252224928400 + 14706170361 = 502220^2 + 121269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266931098761 is a prime.

It is a super-2 number, since 2×266931098761² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266931098696 and 266931098705.

It is not a weakly prime, because it can be changed into another prime (266931098461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133465549380 + 133465549381.

It is an arithmetic number, because the mean of its divisors is an integer number (133465549381).

Almost surely, 2^266931098761 is an apocalyptic number.

It is an amenable number.

266931098761 is a deficient number, since it is larger than the sum of its proper divisors (1).

266931098761 is an equidigital number, since it uses as much as digits as its factorization.

266931098761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 266931098761 in words is "two hundred sixty-six billion, nine hundred thirty-one million, ninety-eight thousand, seven hundred sixty-one".