505544634263 has 2 divisors, whose sum is σ = 505544634264. Its totient is φ = 505544634262.

The previous prime is 505544634191. The next prime is 505544634281. The reversal of 505544634263 is 362436445505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505544634263 - 2²² = 505540439959 is a prime.

It is a super-2 number, since 2×505544634263² (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 (505544634163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252772317131 + 252772317132.

It is an arithmetic number, because the mean of its divisors is an integer number (252772317132).

Almost surely, 2^505544634263 is an apocalyptic number.

505544634263 is a deficient number, since it is larger than the sum of its proper divisors (1).

505544634263 is an equidigital number, since it uses as much as digits as its factorization.

505544634263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 47.

The spelling of 505544634263 in words is "five hundred five billion, five hundred forty-four million, six hundred thirty-four thousand, two hundred sixty-three".