673126635541 has 4 divisors (see below), whose sum is σ = 673130947500. Its totient is φ = 673122323584.

The previous prime is 673126635491. The next prime is 673126635607. The reversal of 673126635541 is 145536621376.

673126635541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 307680996100 + 365445639441 = 554690^2 + 604521^2 .

It is a cyclic number.

It is not a de Polignac number, because 673126635541 - 2²⁹ = 672589764629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673126635341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912666 + ... + 2237083.

It is an arithmetic number, because the mean of its divisors is an integer number (168282736875).

Almost surely, 2^673126635541 is an apocalyptic number.

It is an amenable number.

673126635541 is a deficient number, since it is larger than the sum of its proper divisors (4311959).

673126635541 is a wasteful number, since it uses less digits than its factorization.

673126635541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311958.

The product of its digits is 2721600, while the sum is 49.

The spelling of 673126635541 in words is "six hundred seventy-three billion, one hundred twenty-six million, six hundred thirty-five thousand, five hundred forty-one".