83168741281 has 4 divisors (see below), whose sum is σ = 83203732612. Its totient is φ = 83133749952.

The previous prime is 83168741269. The next prime is 83168741309. The reversal of 83168741281 is 18214786138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18214786138 = 2 ⋅9107393069.

It can be written as a sum of positive squares in 2 ways, for example, as 32225994256 + 50942747025 = 179516^2 + 225705^2 .

It is a cyclic number.

It is not a de Polignac number, because 83168741281 - 2¹⁷ = 83168610209 is a prime.

It is a super-2 number, since 2×83168741281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83168741581) 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, 17492100 + ... + 17496853.

It is an arithmetic number, because the mean of its divisors is an integer number (20800933153).

Almost surely, 2^83168741281 is an apocalyptic number.

It is an amenable number.

83168741281 is a deficient number, since it is larger than the sum of its proper divisors (34991331).

83168741281 is a wasteful number, since it uses less digits than its factorization.

83168741281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34991330.

The product of its digits is 516096, while the sum is 49.

The spelling of 83168741281 in words is "eighty-three billion, one hundred sixty-eight million, seven hundred forty-one thousand, two hundred eighty-one".