23535411989 has 2 divisors, whose sum is σ = 23535411990. Its totient is φ = 23535411988.

The previous prime is 23535411979. The next prime is 23535412027. The reversal of 23535411989 is 98911453532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17601328900 + 5934083089 = 132670^2 + 77033^2 .

It is a cyclic number.

It is not a de Polignac number, because 23535411989 - 2⁴ = 23535411973 is a prime.

It is a super-2 number, since 2×23535411989² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23535411979) 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 as a sum of consecutive naturals, namely, 11767705994 + 11767705995.

It is an arithmetic number, because the mean of its divisors is an integer number (11767705995).

Almost surely, 2^23535411989 is an apocalyptic number.

It is an amenable number.

23535411989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23535411989 is an equidigital number, since it uses as much as digits as its factorization.

23535411989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The spelling of 23535411989 in words is "twenty-three billion, five hundred thirty-five million, four hundred eleven thousand, nine hundred eighty-nine".