23571159397 has 2 divisors, whose sum is σ = 23571159398. Its totient is φ = 23571159396.

The previous prime is 23571159347. The next prime is 23571159433. The reversal of 23571159397 is 79395117532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19407554721 + 4163604676 = 139311^2 + 64526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23571159397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23571159347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11785579698 + 11785579699.

It is an arithmetic number, because the mean of its divisors is an integer number (11785579699).

Almost surely, 2^23571159397 is an apocalyptic number.

It is an amenable number.

23571159397 is a deficient number, since it is larger than the sum of its proper divisors (1).

23571159397 is an equidigital number, since it uses as much as digits as its factorization.

23571159397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1786050, while the sum is 52.

The spelling of 23571159397 in words is "twenty-three billion, five hundred seventy-one million, one hundred fifty-nine thousand, three hundred ninety-seven".