23147222641 has 4 divisors (see below), whose sum is σ = 23147527284. Its totient is φ = 23146918000.

The previous prime is 23147222633. The next prime is 23147222677. The reversal of 23147222641 is 14622274132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6614406241 + 16532816400 = 81329^2 + 128580^2 .

It is a cyclic number.

It is not a de Polignac number, because 23147222641 - 2³ = 23147222633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23147222597 and 23147222606.

It is not an unprimeable number, because it can be changed into a prime (23147222741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65091 + ... + 224791.

It is an arithmetic number, because the mean of its divisors is an integer number (5786881821).

Almost surely, 2^23147222641 is an apocalyptic number.

It is an amenable number.

23147222641 is a deficient number, since it is larger than the sum of its proper divisors (304643).

23147222641 is a wasteful number, since it uses less digits than its factorization.

23147222641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304642.

The product of its digits is 32256, while the sum is 34.

Adding to 23147222641 its reverse (14622274132), we get a palindrome (37769496773).

The spelling of 23147222641 in words is "twenty-three billion, one hundred forty-seven million, two hundred twenty-two thousand, six hundred forty-one".