263052763321 has 4 divisors (see below), whose sum is σ = 263411635492. Its totient is φ = 262693891152.

The previous prime is 263052763319. The next prime is 263052763381. The reversal of 263052763321 is 123367250362.

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

It can be written as a sum of positive squares in 2 ways, for example, as 183303003321 + 79749760000 = 428139^2 + 282400^2 .

It is a cyclic number.

It is not a de Polignac number, because 263052763321 - 2¹ = 263052763319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263052763381) 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, 179434986 + ... + 179436451.

It is an arithmetic number, because the mean of its divisors is an integer number (65852908873).

Almost surely, 2^263052763321 is an apocalyptic number.

It is an amenable number.

263052763321 is a deficient number, since it is larger than the sum of its proper divisors (358872171).

263052763321 is an equidigital number, since it uses as much as digits as its factorization.

263052763321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358872170.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 263052763321 in words is "two hundred sixty-three billion, fifty-two million, seven hundred sixty-three thousand, three hundred twenty-one".