5135970647861 has 2 divisors, whose sum is σ = 5135970647862. Its totient is φ = 5135970647860.

The previous prime is 5135970647783. The next prime is 5135970647879. The reversal of 5135970647861 is 1687460795315.

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., 5135802945361 + 167702500 = 2266231^2 + 12950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5135970647861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5135970647794 and 5135970647803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5135970647891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2567985323930 + 2567985323931.

It is an arithmetic number, because the mean of its divisors is an integer number (2567985323931).

Almost surely, 2^{5135970647861} is an apocalyptic number.

It is an amenable number.

5135970647861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5135970647861 is an equidigital number, since it uses as much as digits as its factorization.

5135970647861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38102400, while the sum is 62.

The spelling of 5135970647861 in words is "five trillion, one hundred thirty-five billion, nine hundred seventy million, six hundred forty-seven thousand, eight hundred sixty-one".