83079871517 has 2 divisors, whose sum is σ = 83079871518. Its totient is φ = 83079871516.

The previous prime is 83079871507. The next prime is 83079871529. The reversal of 83079871517 is 71517897038.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43122260281 + 39957611236 = 207659^2 + 199894^2 .

It is a cyclic number.

It is not a de Polignac number, because 83079871517 - 2¹² = 83079867421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83079871507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41539935758 + 41539935759.

It is an arithmetic number, because the mean of its divisors is an integer number (41539935759).

Almost surely, 2^83079871517 is an apocalyptic number.

It is an amenable number.

83079871517 is a deficient number, since it is larger than the sum of its proper divisors (1).

83079871517 is an equidigital number, since it uses as much as digits as its factorization.

83079871517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 83079871517 in words is "eighty-three billion, seventy-nine million, eight hundred seventy-one thousand, five hundred seventeen".