83121327685141 has 2 divisors, whose sum is σ = 83121327685142. Its totient is φ = 83121327685140.

The previous prime is 83121327685139. The next prime is 83121327685243. The reversal of 83121327685141 is 14158672312138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78681335062500 + 4439992622641 = 8870250^2 + 2107129^2 .

It is a cyclic number.

It is not a de Polignac number, because 83121327685141 - 2¹ = 83121327685139 is a prime.

It is a super-2 number, since 2×83121327685141² (a number of 29 digits) contains 22 as substring.

Together with 83121327685139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83121327685741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41560663842570 + 41560663842571.

It is an arithmetic number, because the mean of its divisors is an integer number (41560663842571).

Almost surely, 2^{83121327685141} is an apocalyptic number.

It is an amenable number.

83121327685141 is a deficient number, since it is larger than the sum of its proper divisors (1).

83121327685141 is an equidigital number, since it uses as much as digits as its factorization.

83121327685141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

Adding to 83121327685141 its reverse (14158672312138), we get a palindrome (97279999997279).

The spelling of 83121327685141 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred twenty-seven million, six hundred eighty-five thousand, one hundred forty-one".