23551333457 has 2 divisors, whose sum is σ = 23551333458. Its totient is φ = 23551333456.

The previous prime is 23551333453. The next prime is 23551333459. The reversal of 23551333457 is 75433315532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22961037841 + 590295616 = 151529^2 + 24296^2 .

It is a cyclic number.

It is not a de Polignac number, because 23551333457 - 2² = 23551333453 is a prime.

Together with 23551333459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23551333453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775666728 + 11775666729.

It is an arithmetic number, because the mean of its divisors is an integer number (11775666729).

Almost surely, 2^23551333457 is an apocalyptic number.

It is an amenable number.

23551333457 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551333457 is an equidigital number, since it uses as much as digits as its factorization.

23551333457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 41.

Adding to 23551333457 its reverse (75433315532), we get a palindrome (98984648989).

The spelling of 23551333457 in words is "twenty-three billion, five hundred fifty-one million, three hundred thirty-three thousand, four hundred fifty-seven".