266426401231 has 2 divisors, whose sum is σ = 266426401232. Its totient is φ = 266426401230.

The previous prime is 266426401223. The next prime is 266426401253. The reversal of 266426401231 is 132104624662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266426401231 - 2³ = 266426401223 is a prime.

It is a super-2 number, since 2×266426401231² (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 (266426407231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133213200615 + 133213200616.

It is an arithmetic number, because the mean of its divisors is an integer number (133213200616).

Almost surely, 2^266426401231 is an apocalyptic number.

266426401231 is a deficient number, since it is larger than the sum of its proper divisors (1).

266426401231 is an equidigital number, since it uses as much as digits as its factorization.

266426401231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 266426401231 in words is "two hundred sixty-six billion, four hundred twenty-six million, four hundred one thousand, two hundred thirty-one".