105605451247 has 2 divisors, whose sum is σ = 105605451248. Its totient is φ = 105605451246.

The previous prime is 105605451221. The next prime is 105605451269. The reversal of 105605451247 is 742154506501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105605451247 is a prime.

It is a super-2 number, since 2×105605451247² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105605451047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52802725623 + 52802725624.

It is an arithmetic number, because the mean of its divisors is an integer number (52802725624).

Almost surely, 2^105605451247 is an apocalyptic number.

105605451247 is a deficient number, since it is larger than the sum of its proper divisors (1).

105605451247 is an equidigital number, since it uses as much as digits as its factorization.

105605451247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168000, while the sum is 40.

Adding to 105605451247 its reverse (742154506501), we get a palindrome (847759957748).

The spelling of 105605451247 in words is "one hundred five billion, six hundred five million, four hundred fifty-one thousand, two hundred forty-seven".