105805558056 has 64 divisors (see below), whose sum is σ = 288770558400. Its totient is φ = 32038963200.

The previous prime is 105805558043. The next prime is 105805558057. The reversal of 105805558056 is 650855508501.

It is a super-2 number, since 2×105805558056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105805557996 and 105805558014.

It is not an unprimeable number, because it can be changed into a prime (105805558057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219480 + ... + 509688.

It is an arithmetic number, because the mean of its divisors is an integer number (4512039975).

Almost surely, 2^105805558056 is an apocalyptic number.

It is an amenable number.

105805558056 is an abundant number, since it is smaller than the sum of its proper divisors (182965000344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105805558056 is a wasteful number, since it uses less digits than its factorization.

105805558056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291610 (or 291606 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 48.

It can be divided in two parts, 1058055 and 58056, that added together give a palindrome (1116111).

The spelling of 105805558056 in words is "one hundred five billion, eight hundred five million, five hundred fifty-eight thousand, fifty-six".