263423716345 has 16 divisors (see below), whose sum is σ = 322064164800. Its totient is φ = 206802585664.

The previous prime is 263423716333. The next prime is 263423716363. The reversal of 263423716345 is 543617324362.

It is a cyclic number.

It is not a de Polignac number, because 263423716345 - 2³¹ = 261276232697 is a prime.

It is a super-2 number, since 2×263423716345² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 263423716295 and 263423716304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068219 + ... + 2191888.

It is an arithmetic number, because the mean of its divisors is an integer number (20129010300).

Almost surely, 2^263423716345 is an apocalyptic number.

It is an amenable number.

263423716345 is a deficient number, since it is larger than the sum of its proper divisors (58640448455).

263423716345 is a wasteful number, since it uses less digits than its factorization.

263423716345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260344.

The product of its digits is 2177280, while the sum is 46.

The spelling of 263423716345 in words is "two hundred sixty-three billion, four hundred twenty-three million, seven hundred sixteen thousand, three hundred forty-five".