105521454443 has 8 divisors (see below), whose sum is σ = 111731716512. Its totient is φ = 99311538816.

The previous prime is 105521454439. The next prime is 105521454457. The reversal of 105521454443 is 344454125501.

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

It is a cyclic number.

It is not a de Polignac number, because 105521454443 - 2² = 105521454439 is a prime.

It is a super-2 number, since 2×105521454443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105521454397 and 105521454406.

It is not an unprimeable number, because it can be changed into a prime (105521450443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799721 + ... + 922277.

It is an arithmetic number, because the mean of its divisors is an integer number (13966464564).

Almost surely, 2^105521454443 is an apocalyptic number.

105521454443 is a deficient number, since it is larger than the sum of its proper divisors (6210262069).

105521454443 is a wasteful number, since it uses less digits than its factorization.

105521454443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173221.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 105521454443 its reverse (344454125501), we get a palindrome (449975579944).

The spelling of 105521454443 in words is "one hundred five billion, five hundred twenty-one million, four hundred fifty-four thousand, four hundred forty-three".