83697134009 has 2 divisors, whose sum is σ = 83697134010. Its totient is φ = 83697134008.

The previous prime is 83697133931. The next prime is 83697134041. The reversal of 83697134009 is 90043179638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64660861225 + 19036272784 = 254285^2 + 137972^2 .

It is a cyclic number.

It is not a de Polignac number, because 83697134009 - 2²⁰ = 83696085433 is a prime.

It is not a weakly prime, because it can be changed into another prime (83697130009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41848567004 + 41848567005.

It is an arithmetic number, because the mean of its divisors is an integer number (41848567005).

Almost surely, 2^83697134009 is an apocalyptic number.

It is an amenable number.

83697134009 is a deficient number, since it is larger than the sum of its proper divisors (1).

83697134009 is an equidigital number, since it uses as much as digits as its factorization.

83697134009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 83697134009 in words is "eighty-three billion, six hundred ninety-seven million, one hundred thirty-four thousand, nine".