83181843610265 has 4 divisors (see below), whose sum is σ = 99818212332324. Its totient is φ = 66545474888208.

The previous prime is 83181843610249. The next prime is 83181843610267. The reversal of 83181843610265 is 56201634818138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23521219617424 + 59660623992841 = 4849868^2 + 7724029^2 .

It is a cyclic number.

It is not a de Polignac number, because 83181843610265 - 2⁴ = 83181843610249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83181843610265.

It is not an unprimeable number, because it can be changed into a prime (83181843610267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8318184361022 + ... + 8318184361031.

It is an arithmetic number, because the mean of its divisors is an integer number (24954553083081).

Almost surely, 2^{83181843610265} is an apocalyptic number.

It is an amenable number.

83181843610265 is a deficient number, since it is larger than the sum of its proper divisors (16636368722059).

83181843610265 is a wasteful number, since it uses less digits than its factorization.

83181843610265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636368722058.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 83181843610265 in words is "eighty-three trillion, one hundred eighty-one billion, eight hundred forty-three million, six hundred ten thousand, two hundred sixty-five".