266931098461 has 2 divisors, whose sum is σ = 266931098462. Its totient is φ = 266931098460.

The previous prime is 266931098449. The next prime is 266931098501. The reversal of 266931098461 is 164890139662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266855929561 + 75168900 = 516581^2 + 8670^2 .

It is a cyclic number.

It is not a de Polignac number, because 266931098461 - 2²⁷ = 266796880733 is a prime.

It is a super-2 number, since 2×266931098461² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266931098411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133465549230 + 133465549231.

It is an arithmetic number, because the mean of its divisors is an integer number (133465549231).

Almost surely, 2^266931098461 is an apocalyptic number.

It is an amenable number.

266931098461 is a deficient number, since it is larger than the sum of its proper divisors (1).

266931098461 is an equidigital number, since it uses as much as digits as its factorization.

266931098461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 266931098461 in words is "two hundred sixty-six billion, nine hundred thirty-one million, ninety-eight thousand, four hundred sixty-one".