105509289646 has 8 divisors (see below), whose sum is σ = 160858425384. Its totient is φ = 51889814520.

The previous prime is 105509289581. The next prime is 105509289661. The reversal of 105509289646 is 646982905501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×105509289646⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432415000 + ... + 432415243.

It is an arithmetic number, because the mean of its divisors is an integer number (20107303173).

Almost surely, 2^105509289646 is an apocalyptic number.

105509289646 is a deficient number, since it is larger than the sum of its proper divisors (55349135738).

105509289646 is an equidigital number, since it uses as much as digits as its factorization.

105509289646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864830306.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 105509289646 in words is "one hundred five billion, five hundred nine million, two hundred eighty-nine thousand, six hundred forty-six".