10101865591 has 2 divisors, whose sum is σ = 10101865592. Its totient is φ = 10101865590.

The previous prime is 10101865589. The next prime is 10101865607. The reversal of 10101865591 is 19556810101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10101865591 - 2¹ = 10101865589 is a prime.

Together with 10101865589, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10101865591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101860591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050932795 + 5050932796.

It is an arithmetic number, because the mean of its divisors is an integer number (5050932796).

Almost surely, 2^10101865591 is an apocalyptic number.

10101865591 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101865591 is an equidigital number, since it uses as much as digits as its factorization.

10101865591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 37.

The spelling of 10101865591 in words is "ten billion, one hundred one million, eight hundred sixty-five thousand, five hundred ninety-one".