105551322144 has 24 divisors (see below), whose sum is σ = 277072220880. Its totient is φ = 35183774016.

The previous prime is 105551322143. The next prime is 105551322157. The reversal of 105551322144 is 441223155501.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×105551322144² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105551322143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549746374 + ... + 549746565.

It is an arithmetic number, because the mean of its divisors is an integer number (11544675870).

Almost surely, 2^105551322144 is an apocalyptic number.

It is an amenable number.

105551322144 is an abundant number, since it is smaller than the sum of its proper divisors (171520898736).

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

105551322144 is a wasteful number, since it uses less digits than its factorization.

105551322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099492952 (or 1099492944 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 105551322144 its reverse (441223155501), we get a palindrome (546774477645).

The spelling of 105551322144 in words is "one hundred five billion, five hundred fifty-one million, three hundred twenty-two thousand, one hundred forty-four".