23755605989 has 2 divisors, whose sum is σ = 23755605990. Its totient is φ = 23755605988.

The previous prime is 23755605977. The next prime is 23755605997. The reversal of 23755605989 is 98950655732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23485562500 + 270043489 = 153250^2 + 16433^2 .

It is a cyclic number.

It is not a de Polignac number, because 23755605989 - 2¹⁶ = 23755540453 is a prime.

It is a super-2 number, since 2×23755605989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23755605889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11877802994 + 11877802995.

It is an arithmetic number, because the mean of its divisors is an integer number (11877802995).

Almost surely, 2^23755605989 is an apocalyptic number.

It is an amenable number.

23755605989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23755605989 is an equidigital number, since it uses as much as digits as its factorization.

23755605989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 23755605989 in words is "twenty-three billion, seven hundred fifty-five million, six hundred five thousand, nine hundred eighty-nine".