266231054651203 has 2 divisors, whose sum is σ = 266231054651204. Its totient is φ = 266231054651202.

The previous prime is 266231054651153. The next prime is 266231054651213. The reversal of 266231054651203 is 302156450132662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266231054651203 - 2¹³ = 266231054643011 is a prime.

It is not a weakly prime, because it can be changed into another prime (266231054651213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133115527325601 + 133115527325602.

It is an arithmetic number, because the mean of its divisors is an integer number (133115527325602).

Almost surely, 2^{266231054651203} is an apocalyptic number.

266231054651203 is a deficient number, since it is larger than the sum of its proper divisors (1).

266231054651203 is an equidigital number, since it uses as much as digits as its factorization.

266231054651203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 266231054651203 in words is "two hundred sixty-six trillion, two hundred thirty-one billion, fifty-four million, six hundred fifty-one thousand, two hundred three".