263351240263247 has 4 divisors (see below), whose sum is σ = 274801294187760. Its totient is φ = 251901186338736.

The previous prime is 263351240263087. The next prime is 263351240263277. The reversal of 263351240263247 is 742362042153362.

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 263351240263247 - 2¹⁰ = 263351240262223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263351240263195 and 263351240263204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263351240263277) 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 3 ways as a sum of consecutive naturals, for example, 5725026962222 + ... + 5725026962267.

It is an arithmetic number, because the mean of its divisors is an integer number (68700323546940).

Almost surely, 2^{263351240263247} is an apocalyptic number.

263351240263247 is a deficient number, since it is larger than the sum of its proper divisors (11450053924513).

263351240263247 is a wasteful number, since it uses less digits than its factorization.

263351240263247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11450053924512.

The product of its (nonzero) digits is 8709120, while the sum is 50.

The spelling of 263351240263247 in words is "two hundred sixty-three trillion, three hundred fifty-one billion, two hundred forty million, two hundred sixty-three thousand, two hundred forty-seven".