105510605990 has 8 divisors (see below), whose sum is σ = 189919090800. Its totient is φ = 42204242392.

The previous prime is 105510605987. The next prime is 105510606007. The reversal of 105510605990 is 99506015501.

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

It is a super-2 number, since 2×105510605990² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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, 5275530290 + ... + 5275530309.

It is an arithmetic number, because the mean of its divisors is an integer number (23739886350).

Almost surely, 2^105510605990 is an apocalyptic number.

105510605990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105510605990 is a deficient number, since it is larger than the sum of its proper divisors (84408484810).

105510605990 is a wasteful number, since it uses less digits than its factorization.

105510605990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10551060606.

The product of its (nonzero) digits is 60750, while the sum is 41.

The spelling of 105510605990 in words is "one hundred five billion, five hundred ten million, six hundred five thousand, nine hundred ninety".