105555591807 has 4 divisors (see below), whose sum is σ = 140740789080. Its totient is φ = 70370394536.

The previous prime is 105555591787. The next prime is 105555591829. The reversal of 105555591807 is 708195555501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105555591807 - 2⁷ = 105555591679 is a prime.

It is a super-2 number, since 2×105555591807² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105555591807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105555591847) 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 in 3 ways as a sum of consecutive naturals, for example, 17592598632 + ... + 17592598637.

It is an arithmetic number, because the mean of its divisors is an integer number (35185197270).

Almost surely, 2^105555591807 is an apocalyptic number.

105555591807 is a deficient number, since it is larger than the sum of its proper divisors (35185197273).

105555591807 is an equidigital number, since it uses as much as digits as its factorization.

105555591807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35185197272.

The product of its (nonzero) digits is 1575000, while the sum is 51.

The spelling of 105555591807 in words is "one hundred five billion, five hundred fifty-five million, five hundred ninety-one thousand, eight hundred seven".