22506545471 has 4 divisors (see below), whose sum is σ = 22507042344. Its totient is φ = 22506048600.

The previous prime is 22506545459. The next prime is 22506545491. The reversal of 22506545471 is 17454560522.

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

It is a cyclic number.

It is not a de Polignac number, because 22506545471 - 2¹⁰ = 22506544447 is a prime.

It is a super-3 number, since 3×22506545471³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506545431) 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, 172820 + ... + 273641.

It is an arithmetic number, because the mean of its divisors is an integer number (5626760586).

Almost surely, 2^22506545471 is an apocalyptic number.

22506545471 is a deficient number, since it is larger than the sum of its proper divisors (496873).

22506545471 is an equidigital number, since it uses as much as digits as its factorization.

22506545471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496872.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 22506545471 in words is "twenty-two billion, five hundred six million, five hundred forty-five thousand, four hundred seventy-one".