266004161234551 has 2 divisors, whose sum is σ = 266004161234552. Its totient is φ = 266004161234550.

The previous prime is 266004161234509. The next prime is 266004161234563. The reversal of 266004161234551 is 155432161400662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266004161234551 - 2⁷ = 266004161234423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266004161234501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133002080617275 + 133002080617276.

It is an arithmetic number, because the mean of its divisors is an integer number (133002080617276).

Almost surely, 2^{266004161234551} is an apocalyptic number.

266004161234551 is a deficient number, since it is larger than the sum of its proper divisors (1).

266004161234551 is an equidigital number, since it uses as much as digits as its factorization.

266004161234551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 266004161234551 in words is "two hundred sixty-six trillion, four billion, one hundred sixty-one million, two hundred thirty-four thousand, five hundred fifty-one".