263426492873 has 4 divisors (see below), whose sum is σ = 263451594000. Its totient is φ = 263401391748.

The previous prime is 263426492767. The next prime is 263426492899. The reversal of 263426492873 is 378294624362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263426492873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263426492473) 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, 12534815 + ... + 12555812.

It is an arithmetic number, because the mean of its divisors is an integer number (65862898500).

Almost surely, 2^263426492873 is an apocalyptic number.

It is an amenable number.

263426492873 is a deficient number, since it is larger than the sum of its proper divisors (25101127).

263426492873 is a wasteful number, since it uses less digits than its factorization.

263426492873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25101126.

The product of its digits is 20901888, while the sum is 56.

The spelling of 263426492873 in words is "two hundred sixty-three billion, four hundred twenty-six million, four hundred ninety-two thousand, eight hundred seventy-three".