266426401253 has 2 divisors, whose sum is σ = 266426401254. Its totient is φ = 266426401252.

The previous prime is 266426401231. The next prime is 266426401273. The reversal of 266426401253 is 352104624662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265166293249 + 1260108004 = 514943^2 + 35498^2 .

It is a cyclic number.

It is not a de Polignac number, because 266426401253 - 2²² = 266422206949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266426401253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266426401223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133213200626 + 133213200627.

It is an arithmetic number, because the mean of its divisors is an integer number (133213200627).

Almost surely, 2^266426401253 is an apocalyptic number.

It is an amenable number.

266426401253 is a deficient number, since it is larger than the sum of its proper divisors (1).

266426401253 is an equidigital number, since it uses as much as digits as its factorization.

266426401253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 266426401253 in words is "two hundred sixty-six billion, four hundred twenty-six million, four hundred one thousand, two hundred fifty-three".