23555222401 has 2 divisors, whose sum is σ = 23555222402. Its totient is φ = 23555222400.

The previous prime is 23555222399. The next prime is 23555222437. The reversal of 23555222401 is 10422255532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17568177025 + 5987045376 = 132545^2 + 77376^2 .

It is a cyclic number.

It is not a de Polignac number, because 23555222401 - 2¹ = 23555222399 is a prime.

It is a super-3 number, since 3×23555222401³ (a number of 32 digits) contains 333 as substring.

Together with 23555222399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23555222441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11777611200 + 11777611201.

It is an arithmetic number, because the mean of its divisors is an integer number (11777611201).

Almost surely, 2^23555222401 is an apocalyptic number.

It is an amenable number.

23555222401 is a deficient number, since it is larger than the sum of its proper divisors (1).

23555222401 is an equidigital number, since it uses as much as digits as its factorization.

23555222401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 23555222401 its reverse (10422255532), we get a palindrome (33977477933).

The spelling of 23555222401 in words is "twenty-three billion, five hundred fifty-five million, two hundred twenty-two thousand, four hundred one".