83117730554861 has 32 divisors (see below), whose sum is σ = 89843828207328. Its totient is φ = 76607099043840.

The previous prime is 83117730554819. The next prime is 83117730554981. The reversal of 83117730554861 is 16845503771138.

It can be written as a sum of positive squares in 16 ways, for example, as 59566073024836 + 23551657530025 = 7717906^2 + 4853005^2 .

It is a cyclic number.

It is not a de Polignac number, because 83117730554861 - 2³⁸ = 82842852647917 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 83117730554861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83117730551861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3265011845 + ... + 3265037301.

It is an arithmetic number, because the mean of its divisors is an integer number (2807619631479).

Almost surely, 2^{83117730554861} is an apocalyptic number.

It is an amenable number.

83117730554861 is a deficient number, since it is larger than the sum of its proper divisors (6726097652467).

83117730554861 is a wasteful number, since it uses less digits than its factorization.

83117730554861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39281.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 83117730554861 in words is "eighty-three trillion, one hundred seventeen billion, seven hundred thirty million, five hundred fifty-four thousand, eight hundred sixty-one".