83515113197 has 2 divisors, whose sum is σ = 83515113198. Its totient is φ = 83515113196.

The previous prime is 83515113173. The next prime is 83515113203. The reversal of 83515113197 is 79131151538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62834947561 + 20680165636 = 250669^2 + 143806^2 .

It is a cyclic number.

It is not a de Polignac number, because 83515113197 - 2⁶ = 83515113133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83515113107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41757556598 + 41757556599.

It is an arithmetic number, because the mean of its divisors is an integer number (41757556599).

Almost surely, 2^83515113197 is an apocalyptic number.

It is an amenable number.

83515113197 is a deficient number, since it is larger than the sum of its proper divisors (1).

83515113197 is an equidigital number, since it uses as much as digits as its factorization.

83515113197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 44.

The spelling of 83515113197 in words is "eighty-three billion, five hundred fifteen million, one hundred thirteen thousand, one hundred ninety-seven".