23653570729 has 2 divisors, whose sum is σ = 23653570730. Its totient is φ = 23653570728.

The previous prime is 23653570727. The next prime is 23653570757. The reversal of 23653570729 is 92707535632.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18844425625 + 4809145104 = 137275^2 + 69348^2 .

It is a cyclic number.

It is not a de Polignac number, because 23653570729 - 2¹ = 23653570727 is a prime.

Together with 23653570727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23653570727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11826785364 + 11826785365.

It is an arithmetic number, because the mean of its divisors is an integer number (11826785365).

Almost surely, 2^23653570729 is an apocalyptic number.

It is an amenable number.

23653570729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23653570729 is an equidigital number, since it uses as much as digits as its factorization.

23653570729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 23653570729 in words is "twenty-three billion, six hundred fifty-three million, five hundred seventy thousand, seven hundred twenty-nine".