10659981391 has 2 divisors, whose sum is σ = 10659981392. Its totient is φ = 10659981390.

The previous prime is 10659981389. The next prime is 10659981491. The reversal of 10659981391 is 19318995601.

It is a weak prime.

It is an emirp because it is prime and its reverse (19318995601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10659981391 - 2¹ = 10659981389 is a prime.

It is a super-2 number, since 2×10659981391² (a number of 21 digits) contains 22 as substring.

Together with 10659981389, 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 (10659981301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5329990695 + 5329990696.

It is an arithmetic number, because the mean of its divisors is an integer number (5329990696).

Almost surely, 2^10659981391 is an apocalyptic number.

10659981391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10659981391 is an equidigital number, since it uses as much as digits as its factorization.

10659981391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 52.

The spelling of 10659981391 in words is "ten billion, six hundred fifty-nine million, nine hundred eighty-one thousand, three hundred ninety-one".