2043423251105 has 4 divisors (see below), whose sum is σ = 2452107901332. Its totient is φ = 1634738600880.

The previous prime is 2043423251033. The next prime is 2043423251119. The reversal of 2043423251105 is 5011523243402.

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 1096493802496 + 946929448609 = 1047136^2 + 973103^2 .

It is not a de Polignac number, because 2043423251105 - 2¹² = 2043423247009 is a prime.

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, 204342325106 + ... + 204342325115.

It is an arithmetic number, because the mean of its divisors is an integer number (613026975333).

Almost surely, 2^{2043423251105} is an apocalyptic number.

It is an amenable number.

2043423251105 is a deficient number, since it is larger than the sum of its proper divisors (408684650227).

2043423251105 is an equidigital number, since it uses as much as digits as its factorization.

2043423251105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408684650226.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 2043423251105 its reverse (5011523243402), we get a palindrome (7054946494507).

The spelling of 2043423251105 in words is "two trillion, forty-three billion, four hundred twenty-three million, two hundred fifty-one thousand, one hundred five".