263845872474623 has 4 divisors (see below), whose sum is σ = 264472584761208. Its totient is φ = 263219160188040.

The previous prime is 263845872474601. The next prime is 263845872474647. The reversal of 263845872474623 is 326474278548362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 263845872474623 - 2¹⁸ = 263845872212479 is a prime.

It is a super-2 number, since 2×263845872474623² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263845872474683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313356142661 + ... + 313356143502.

It is an arithmetic number, because the mean of its divisors is an integer number (66118146190302).

Almost surely, 2^{263845872474623} is an apocalyptic number.

263845872474623 is a deficient number, since it is larger than the sum of its proper divisors (626712286585).

263845872474623 is an equidigital number, since it uses as much as digits as its factorization.

263845872474623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626712286584.

The product of its digits is 2601123840, while the sum is 71.

The spelling of 263845872474623 in words is "two hundred sixty-three trillion, eight hundred forty-five billion, eight hundred seventy-two million, four hundred seventy-four thousand, six hundred twenty-three".