263105537063 has 2 divisors, whose sum is σ = 263105537064. Its totient is φ = 263105537062.

The previous prime is 263105537039. The next prime is 263105537087. The reversal of 263105537063 is 360735501362.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (263105537039) and next prime (263105537087).

It is a cyclic number.

It is not a de Polignac number, because 263105537063 - 2⁶ = 263105536999 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263105537063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263105534063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131552768531 + 131552768532.

It is an arithmetic number, because the mean of its divisors is an integer number (131552768532).

Almost surely, 2^263105537063 is an apocalyptic number.

263105537063 is a deficient number, since it is larger than the sum of its proper divisors (1).

263105537063 is an equidigital number, since it uses as much as digits as its factorization.

263105537063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 263105537063 in words is "two hundred sixty-three billion, one hundred five million, five hundred thirty-seven thousand, sixty-three".