83123686708669 has 2 divisors, whose sum is σ = 83123686708670. Its totient is φ = 83123686708668.

The previous prime is 83123686708663. The next prime is 83123686708679. The reversal of 83123686708669 is 96680768632138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67176546976900 + 15947139731769 = 8196130^2 + 3993387^2 .

It is a cyclic number.

It is not a de Polignac number, because 83123686708669 - 2⁹ = 83123686708157 is a prime.

It is a super-2 number, since 2×83123686708669² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83123686708663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41561843354334 + 41561843354335.

It is an arithmetic number, because the mean of its divisors is an integer number (41561843354335).

Almost surely, 2^{83123686708669} is an apocalyptic number.

It is an amenable number.

83123686708669 is a deficient number, since it is larger than the sum of its proper divisors (1).

83123686708669 is an equidigital number, since it uses as much as digits as its factorization.

83123686708669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752467968, while the sum is 73.

The spelling of 83123686708669 in words is "eighty-three trillion, one hundred twenty-three billion, six hundred eighty-six million, seven hundred eight thousand, six hundred sixty-nine".