105551651018 has 16 divisors (see below), whose sum is σ = 172732055040. Its totient is φ = 47974920000.

The previous prime is 105551651017. The next prime is 105551651021. The reversal of 105551651018 is 810156155501.

It is a super-3 number, since 3×105551651018³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105551651017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212018 + ... + 506018.

It is an arithmetic number, because the mean of its divisors is an integer number (10795753440).

Almost surely, 2^105551651018 is an apocalyptic number.

105551651018 is a deficient number, since it is larger than the sum of its proper divisors (67180404022).

105551651018 is a wasteful number, since it uses less digits than its factorization.

105551651018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310333.

The product of its (nonzero) digits is 30000, while the sum is 38.

The spelling of 105551651018 in words is "one hundred five billion, five hundred fifty-one million, six hundred fifty-one thousand, eighteen".