2642426974289 has 4 divisors (see below), whose sum is σ = 2656118305956. Its totient is φ = 2628735642624.

The previous prime is 2642426974273. The next prime is 2642426974301. The reversal of 2642426974289 is 9824796242462.

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 390146396689 + 2252280577600 = 624617^2 + 1500760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642426974289 - 2⁴ = 2642426974273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642426974219) 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, 6845665544 + ... + 6845665929.

It is an arithmetic number, because the mean of its divisors is an integer number (664029576489).

Almost surely, 2^{2642426974289} is an apocalyptic number.

It is an amenable number.

2642426974289 is a deficient number, since it is larger than the sum of its proper divisors (13691331667).

2642426974289 is a wasteful number, since it uses less digits than its factorization.

2642426974289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13691331666.

The product of its digits is 167215104, while the sum is 65.

The spelling of 2642426974289 in words is "two trillion, six hundred forty-two billion, four hundred twenty-six million, nine hundred seventy-four thousand, two hundred eighty-nine".