263255543273 has 4 divisors (see below), whose sum is σ = 263401716948. Its totient is φ = 263109369600.

The previous prime is 263255543231. The next prime is 263255543297. The reversal of 263255543273 is 372345552362.

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 151105570729 + 112149972544 = 388723^2 + 334888^2 .

It is a cyclic number.

It is not a de Polignac number, because 263255543273 - 2⁸ = 263255543017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263255543203) 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, 73084136 + ... + 73087737.

It is an arithmetic number, because the mean of its divisors is an integer number (65850429237).

Almost surely, 2^263255543273 is an apocalyptic number.

It is an amenable number.

263255543273 is a deficient number, since it is larger than the sum of its proper divisors (146173675).

263255543273 is a wasteful number, since it uses less digits than its factorization.

263255543273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146173674.

The product of its digits is 4536000, while the sum is 47.

The spelling of 263255543273 in words is "two hundred sixty-three billion, two hundred fifty-five million, five hundred forty-three thousand, two hundred seventy-three".