23509205029 has 2 divisors, whose sum is σ = 23509205030. Its totient is φ = 23509205028.

The previous prime is 23509205023. The next prime is 23509205053. The reversal of 23509205029 is 92050290532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23509168929 + 36100 = 153327^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 23509205029 - 2⁹ = 23509204517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23509205023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11754602514 + 11754602515.

It is an arithmetic number, because the mean of its divisors is an integer number (11754602515).

Almost surely, 2^23509205029 is an apocalyptic number.

It is an amenable number.

23509205029 is a deficient number, since it is larger than the sum of its proper divisors (1).

23509205029 is an equidigital number, since it uses as much as digits as its factorization.

23509205029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 23509205029 in words is "twenty-three billion, five hundred nine million, two hundred five thousand, twenty-nine".