2842066620649 has 9 divisors (see below), whose sum is σ = 2903903666967. Its totient is φ = 2781519569304.

The previous prime is 2842066620647. The next prime is 2842066620671. The reversal of 2842066620649 is 9460266602482.

The square root of 2842066620649 is 1685843.

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

2842066620649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2563979145049 + 278087475600 = 1601243^2 + 527340^2 .

It is not a de Polignac number, because 2842066620649 - 2¹ = 2842066620647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2842066620649.

It is not an unprimeable number, because it can be changed into a prime (2842066620647) 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, 79216687 + ... + 79252555.

Almost surely, 2^{2842066620649} is an apocalyptic number.

2842066620649 is the 1685843-rd square number.

2842066620649 is the 842922-nd centered octagonal number.

It is an amenable number.

2842066620649 is a deficient number, since it is larger than the sum of its proper divisors (61837046318).

2842066620649 is an frugal number, since it uses more digits than its factorization.

2842066620649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71832 (or 35916 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 55.

The spelling of 2842066620649 in words is "two trillion, eight hundred forty-two billion, sixty-six million, six hundred twenty thousand, six hundred forty-nine".