23534574220517 has 2 divisors, whose sum is σ = 23534574220518. Its totient is φ = 23534574220516.

The previous prime is 23534574220483. The next prime is 23534574220543. The reversal of 23534574220517 is 71502247543532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17335514996836 + 6199059223681 = 4163594^2 + 2489791^2 .

It is a cyclic number.

It is not a de Polignac number, because 23534574220517 - 2¹⁸ = 23534573958373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23534574222517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11767287110258 + 11767287110259.

It is an arithmetic number, because the mean of its divisors is an integer number (11767287110259).

Almost surely, 2^{23534574220517} is an apocalyptic number.

It is an amenable number.

23534574220517 is a deficient number, since it is larger than the sum of its proper divisors (1).

23534574220517 is an equidigital number, since it uses as much as digits as its factorization.

23534574220517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056000, while the sum is 50.

The spelling of 23534574220517 in words is "twenty-three trillion, five hundred thirty-four billion, five hundred seventy-four million, two hundred twenty thousand, five hundred seventeen".