107668539491 has 2 divisors, whose sum is σ = 107668539492. Its totient is φ = 107668539490.

The previous prime is 107668539479. The next prime is 107668539493. The reversal of 107668539491 is 194935866701.

It is a strong prime.

It is an emirp because it is prime and its reverse (194935866701) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107668539491 is a prime.

It is a super-2 number, since 2×107668539491² (a number of 23 digits) contains 22 as substring.

Together with 107668539493, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 107668539491.

It is not a weakly prime, because it can be changed into another prime (107668539493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53834269745 + 53834269746.

It is an arithmetic number, because the mean of its divisors is an integer number (53834269746).

Almost surely, 2^107668539491 is an apocalyptic number.

107668539491 is a deficient number, since it is larger than the sum of its proper divisors (1).

107668539491 is an equidigital number, since it uses as much as digits as its factorization.

107668539491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 107668539491 in words is "one hundred seven billion, six hundred sixty-eight million, five hundred thirty-nine thousand, four hundred ninety-one".