43520245105 has 4 divisors (see below), whose sum is σ = 52224294132. Its totient is φ = 34816196080.

The previous prime is 43520245079. The next prime is 43520245121. The reversal of 43520245105 is 50154202534.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5022273424 + 38497971681 = 70868^2 + 196209^2 .

It is not a de Polignac number, because 43520245105 - 2⁵ = 43520245073 is a prime.

It is a super-2 number, since 2×43520245105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 4352024506 + ... + 4352024515.

It is an arithmetic number, because the mean of its divisors is an integer number (13056073533).

Almost surely, 2^43520245105 is an apocalyptic number.

It is an amenable number.

43520245105 is a deficient number, since it is larger than the sum of its proper divisors (8704049027).

43520245105 is an equidigital number, since it uses as much as digits as its factorization.

43520245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704049026.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 43520245105 its reverse (50154202534), we get a palindrome (93674447639).

The spelling of 43520245105 in words is "forty-three billion, five hundred twenty million, two hundred forty-five thousand, one hundred five".