43445123101 has 4 divisors (see below), whose sum is σ = 43463683804. Its totient is φ = 43426562400.

The previous prime is 43445123089. The next prime is 43445123201. The reversal of 43445123101 is 10132154434.

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 36271202500 + 7173920601 = 190450^2 + 84699^2 .

It is a cyclic number.

It is not a de Polignac number, because 43445123101 - 2²¹ = 43443025949 is a prime.

It is a super-2 number, since 2×43445123101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43445123101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43445123201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9276840 + ... + 9281521.

It is an arithmetic number, because the mean of its divisors is an integer number (10865920951).

Almost surely, 2^43445123101 is an apocalyptic number.

It is an amenable number.

43445123101 is a deficient number, since it is larger than the sum of its proper divisors (18560703).

43445123101 is a wasteful number, since it uses less digits than its factorization.

43445123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18560702.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 43445123101 its reverse (10132154434), we get a palindrome (53577277535).

The spelling of 43445123101 in words is "forty-three billion, four hundred forty-five million, one hundred twenty-three thousand, one hundred one".