105551776591 has 2 divisors, whose sum is σ = 105551776592. Its totient is φ = 105551776590.

The previous prime is 105551776549. The next prime is 105551776609. The reversal of 105551776591 is 195677155501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105551776591 - 2¹⁵ = 105551743823 is a prime.

It is a super-2 number, since 2×105551776591² (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 (105551776501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775888295 + 52775888296.

It is an arithmetic number, because the mean of its divisors is an integer number (52775888296).

Almost surely, 2^105551776591 is an apocalyptic number.

105551776591 is a deficient number, since it is larger than the sum of its proper divisors (1).

105551776591 is an equidigital number, since it uses as much as digits as its factorization.

105551776591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653750, while the sum is 52.

The spelling of 105551776591 in words is "one hundred five billion, five hundred fifty-one million, seven hundred seventy-six thousand, five hundred ninety-one".