263318057351 has 4 divisors (see below), whose sum is σ = 263319085104. Its totient is φ = 263317029600.

The previous prime is 263318057341. The next prime is 263318057371. The reversal of 263318057351 is 153750813362.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 263318057351 - 2²² = 263313863047 is a prime.

It is a super-5 number, since 5×263318057351⁵ (a number of 58 digits) contains 55555 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 (263318057341) 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, 215846 + ... + 757116.

It is an arithmetic number, because the mean of its divisors is an integer number (65829771276).

Almost surely, 2^263318057351 is an apocalyptic number.

263318057351 is a deficient number, since it is larger than the sum of its proper divisors (1027753).

263318057351 is an equidigital number, since it uses as much as digits as its factorization.

263318057351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027752.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 263318057351 in words is "two hundred sixty-three billion, three hundred eighteen million, fifty-seven thousand, three hundred fifty-one".