105555591806 has 32 divisors (see below), whose sum is σ = 182724740352. Its totient is φ = 44795413440.

The previous prime is 105555591787. The next prime is 105555591829. The reversal of 105555591806 is 608195555501.

It is a super-2 number, since 2×105555591806² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3642185 + ... + 3671051.

It is an arithmetic number, because the mean of its divisors is an integer number (5710148136).

Almost surely, 2^105555591806 is an apocalyptic number.

105555591806 is a deficient number, since it is larger than the sum of its proper divisors (77169148546).

105555591806 is a wasteful number, since it uses less digits than its factorization.

105555591806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31424.

The product of its (nonzero) digits is 1350000, while the sum is 50.

The spelling of 105555591806 in words is "one hundred five billion, five hundred fifty-five million, five hundred ninety-one thousand, eight hundred six".