83699320291 has 2 divisors, whose sum is σ = 83699320292. Its totient is φ = 83699320290.

The previous prime is 83699320283. The next prime is 83699320333. The reversal of 83699320291 is 19202399638.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83699320291 - 2³ = 83699320283 is a prime.

It is not a weakly prime, because it can be changed into another prime (83699320231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41849660145 + 41849660146.

It is an arithmetic number, because the mean of its divisors is an integer number (41849660146).

Almost surely, 2^83699320291 is an apocalyptic number.

83699320291 is a deficient number, since it is larger than the sum of its proper divisors (1).

83699320291 is an equidigital number, since it uses as much as digits as its factorization.

83699320291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 83699320291 in words is "eighty-three billion, six hundred ninety-nine million, three hundred twenty thousand, two hundred ninety-one".