266615561062463 has 2 divisors, whose sum is σ = 266615561062464. Its totient is φ = 266615561062462.

The previous prime is 266615561062429. The next prime is 266615561062493. The reversal of 266615561062463 is 364260165516662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266615561062463 - 2¹⁰ = 266615561061439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266615561062493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133307780531231 + 133307780531232.

It is an arithmetic number, because the mean of its divisors is an integer number (133307780531232).

Almost surely, 2^{266615561062463} is an apocalyptic number.

266615561062463 is a deficient number, since it is larger than the sum of its proper divisors (1).

266615561062463 is an equidigital number, since it uses as much as digits as its factorization.

266615561062463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55987200, while the sum is 59.

The spelling of 266615561062463 in words is "two hundred sixty-six trillion, six hundred fifteen billion, five hundred sixty-one million, sixty-two thousand, four hundred sixty-three".