5129596016861 has 2 divisors, whose sum is σ = 5129596016862. Its totient is φ = 5129596016860.

The previous prime is 5129596016819. The next prime is 5129596016869. The reversal of 5129596016861 is 1686106959215.

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., 2819746224100 + 2309849792761 = 1679210^2 + 1519819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5129596016861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5129596016861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5129596016869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2564798008430 + 2564798008431.

It is an arithmetic number, because the mean of its divisors is an integer number (2564798008431).

Almost surely, 2^{5129596016861} is an apocalyptic number.

It is an amenable number.

5129596016861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5129596016861 is an equidigital number, since it uses as much as digits as its factorization.

5129596016861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 59.

The spelling of 5129596016861 in words is "five trillion, one hundred twenty-nine billion, five hundred ninety-six million, sixteen thousand, eight hundred sixty-one".