2043451435505 has 4 divisors (see below), whose sum is σ = 2452141722612. Its totient is φ = 1634761148400.

The previous prime is 2043451435483. The next prime is 2043451435511. The reversal of 2043451435505 is 5055341543402.

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 504541716721 + 1538909718784 = 710311^2 + 1240528^2 .

It is not a de Polignac number, because 2043451435505 - 2²² = 2043447241201 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, 204345143546 + ... + 204345143555.

It is an arithmetic number, because the mean of its divisors is an integer number (613035430653).

Almost surely, 2^{2043451435505} is an apocalyptic number.

It is an amenable number.

2043451435505 is a deficient number, since it is larger than the sum of its proper divisors (408690287107).

2043451435505 is an equidigital number, since it uses as much as digits as its factorization.

2043451435505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408690287106.

The product of its (nonzero) digits is 720000, while the sum is 41.

Adding to 2043451435505 its reverse (5055341543402), we get a palindrome (7098792978907).

The spelling of 2043451435505 in words is "two trillion, forty-three billion, four hundred fifty-one million, four hundred thirty-five thousand, five hundred five".