22509478263 has 4 divisors (see below), whose sum is σ = 30012637688. Its totient is φ = 15006318840.

The previous prime is 22509478259. The next prime is 22509478273. The reversal of 22509478263 is 36287490522.

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

It is not a de Polignac number, because 22509478263 - 2² = 22509478259 is a prime.

It is a super-2 number, since 2×22509478263² (a number of 22 digits) contains 22 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 (22509478213) 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, 3751579708 + ... + 3751579713.

It is an arithmetic number, because the mean of its divisors is an integer number (7503159422).

Almost surely, 2^22509478263 is an apocalyptic number.

22509478263 is a deficient number, since it is larger than the sum of its proper divisors (7503159425).

22509478263 is an equidigital number, since it uses as much as digits as its factorization.

22509478263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503159424.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 22509478263 in words is "twenty-two billion, five hundred nine million, four hundred seventy-eight thousand, two hundred sixty-three".