83397317877 has 28 divisors (see below), whose sum is σ = 132394018860. Its totient is φ = 52327721088.

The previous prime is 83397317837. The next prime is 83397317909. The reversal of 83397317877 is 77871379338.

83397317877 is a `hidden beast` number, since 8 + 3 + 397 + 3 + 178 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26261498916 + 57135818961 = 162054^2 + 239031^2 .

It is not a de Polignac number, because 83397317877 - 2⁶ = 83397317813 is a prime.

It is a super-2 number, since 2×83397317877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83397317837) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3352302 + ... + 3377087.

Almost surely, 2^83397317877 is an apocalyptic number.

It is an amenable number.

83397317877 is a deficient number, since it is larger than the sum of its proper divisors (48996700983).

83397317877 is an equidigital number, since it uses as much as digits as its factorization.

83397317877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729424 (or 6729409 counting only the distinct ones).

The product of its digits is 37340352, while the sum is 63.

The spelling of 83397317877 in words is "eighty-three billion, three hundred ninety-seven million, three hundred seventeen thousand, eight hundred seventy-seven".