523861957193 has 2 divisors, whose sum is σ = 523861957194. Its totient is φ = 523861957192.

The previous prime is 523861957169. The next prime is 523861957231. The reversal of 523861957193 is 391759168325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457066588489 + 66795368704 = 676067^2 + 258448^2 .

It is a cyclic number.

It is not a de Polignac number, because 523861957193 - 2²⁶ = 523794848329 is a prime.

It is not a weakly prime, because it can be changed into another prime (523861057193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261930978596 + 261930978597.

It is an arithmetic number, because the mean of its divisors is an integer number (261930978597).

Almost surely, 2^523861957193 is an apocalyptic number.

It is an amenable number.

523861957193 is a deficient number, since it is larger than the sum of its proper divisors (1).

523861957193 is an equidigital number, since it uses as much as digits as its factorization.

523861957193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 59.

The spelling of 523861957193 in words is "five hundred twenty-three billion, eight hundred sixty-one million, nine hundred fifty-seven thousand, one hundred ninety-three".