263825492117 has 4 divisors (see below), whose sum is σ = 287809627776. Its totient is φ = 239841356460.

The previous prime is 263825492107. The next prime is 263825492137. The reversal of 263825492117 is 711294528362.

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-263825492117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263825492107) 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, 11992067813 + ... + 11992067834.

It is an arithmetic number, because the mean of its divisors is an integer number (71952406944).

Almost surely, 2^263825492117 is an apocalyptic number.

It is an amenable number.

263825492117 is a deficient number, since it is larger than the sum of its proper divisors (23984135659).

263825492117 is a wasteful number, since it uses less digits than its factorization.

263825492117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23984135658.

The product of its digits is 1451520, while the sum is 50.

The spelling of 263825492117 in words is "two hundred sixty-three billion, eight hundred twenty-five million, four hundred ninety-two thousand, one hundred seventeen".