23550942581 has 2 divisors, whose sum is σ = 23550942582. Its totient is φ = 23550942580.

The previous prime is 23550942539. The next prime is 23550942589. The reversal of 23550942581 is 18524905532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23511315556 + 39627025 = 153334^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 23550942581 - 2¹⁸ = 23550680437 is a prime.

It is a super-3 number, since 3×23550942581³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23550942589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775471290 + 11775471291.

It is an arithmetic number, because the mean of its divisors is an integer number (11775471291).

Almost surely, 2^23550942581 is an apocalyptic number.

It is an amenable number.

23550942581 is a deficient number, since it is larger than the sum of its proper divisors (1).

23550942581 is an equidigital number, since it uses as much as digits as its factorization.

23550942581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 23550942581 in words is "twenty-three billion, five hundred fifty million, nine hundred forty-two thousand, five hundred eighty-one".