263667562243 has 6 divisors (see below), whose sum is σ = 265578117324. Its totient is φ = 261770654124.

The previous prime is 263667562181. The next prime is 263667562271. The reversal of 263667562243 is 342265766362.

It is a de Polignac number, because none of the positive numbers 2^k-263667562243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263667562283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6804021 + ... + 6842662.

It is an arithmetic number, because the mean of its divisors is an integer number (44263019554).

Almost surely, 2^263667562243 is an apocalyptic number.

263667562243 is a deficient number, since it is larger than the sum of its proper divisors (1910555081).

263667562243 is an equidigital number, since it uses as much as digits as its factorization.

263667562243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646961 (or 13646822 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 52.

The spelling of 263667562243 in words is "two hundred sixty-three billion, six hundred sixty-seven million, five hundred sixty-two thousand, two hundred forty-three".