266445657131 has 2 divisors, whose sum is σ = 266445657132. Its totient is φ = 266445657130.

The previous prime is 266445657089. The next prime is 266445657143. The reversal of 266445657131 is 131756544662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266445657131 - 2¹⁰ = 266445656107 is a prime.

It is a super-2 number, since 2×266445657131² (a number of 24 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 266445657131.

It is not a weakly prime, because it can be changed into another prime (266445657431) 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, 133222828565 + 133222828566.

It is an arithmetic number, because the mean of its divisors is an integer number (133222828566).

Almost surely, 2^266445657131 is an apocalyptic number.

266445657131 is a deficient number, since it is larger than the sum of its proper divisors (1).

266445657131 is an equidigital number, since it uses as much as digits as its factorization.

266445657131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 50.

The spelling of 266445657131 in words is "two hundred sixty-six billion, four hundred forty-five million, six hundred fifty-seven thousand, one hundred thirty-one".