83699047871 has 2 divisors, whose sum is σ = 83699047872. Its totient is φ = 83699047870.

The previous prime is 83699047849. The next prime is 83699047889. The reversal of 83699047871 is 17874099638.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83699047871 - 2¹⁴ = 83699031487 is a prime.

It is a super-2 number, since 2×83699047871² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83699047891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41849523935 + 41849523936.

It is an arithmetic number, because the mean of its divisors is an integer number (41849523936).

Almost surely, 2^83699047871 is an apocalyptic number.

83699047871 is a deficient number, since it is larger than the sum of its proper divisors (1).

83699047871 is an equidigital number, since it uses as much as digits as its factorization.

83699047871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 83699047871 in words is "eighty-three billion, six hundred ninety-nine million, forty-seven thousand, eight hundred seventy-one".