101665325689 has 2 divisors, whose sum is σ = 101665325690. Its totient is φ = 101665325688.

The previous prime is 101665325687. The next prime is 101665325737. The reversal of 101665325689 is 986523566101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65333916025 + 36331409664 = 255605^2 + 190608^2 .

It is a cyclic number.

It is not a de Polignac number, because 101665325689 - 2¹ = 101665325687 is a prime.

Together with 101665325687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (101665325681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50832662844 + 50832662845.

It is an arithmetic number, because the mean of its divisors is an integer number (50832662845).

Almost surely, 2^101665325689 is an apocalyptic number.

It is an amenable number.

101665325689 is a deficient number, since it is larger than the sum of its proper divisors (1).

101665325689 is an equidigital number, since it uses as much as digits as its factorization.

101665325689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 101665325689 in words is "one hundred one billion, six hundred sixty-five million, three hundred twenty-five thousand, six hundred eighty-nine".