2673542199409 has 9 divisors (see below), whose sum is σ = 2689922031961. Its totient is φ = 2657261538580.

The previous prime is 2673542199311. The next prime is 2673542199437. The reversal of 2673542199409 is 9049912453762.

The square root of 2673542199409 is 1635097.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2673542199409 - 2⁹ = 2673542198897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2673542191409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 273056304 + ... + 273066094.

Almost surely, 2^{2673542199409} is an apocalyptic number.

2673542199409 is the 1635097-th square number.

2673542199409 is the 817549-th centered octagonal number.

It is an amenable number.

2673542199409 is a deficient number, since it is larger than the sum of its proper divisors (16379832552).

2673542199409 is an frugal number, since it uses more digits than its factorization.

2673542199409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19916 (or 9958 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 2673542199409 in words is "two trillion, six hundred seventy-three billion, five hundred forty-two million, one hundred ninety-nine thousand, four hundred nine".