2642955764089 has 3 divisors (see below), whose sum is σ = 2642957389807. Its totient is φ = 2642954138372.

The previous prime is 2642955764063. The next prime is 2642955764123. The reversal of 2642955764089 is 9804675592462.

The square root of 2642955764089 is 1625717.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2031755625 + 2640924008464 = 45075^2 + 1625092^2 .

It is not a de Polignac number, because 2642955764089 - 2¹⁵ = 2642955731321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642955764489) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 812859 + ... + 2438575.

Almost surely, 2^{2642955764089} is an apocalyptic number.

2642955764089 is the 1625717-th square number.

2642955764089 is the 812859-th centered octagonal number.

It is an amenable number.

2642955764089 is a deficient number, since it is larger than the sum of its proper divisors (1625718).

2642955764089 is an frugal number, since it uses more digits than its factorization.

2642955764089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251434 (or 1625717 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 67.

The spelling of 2642955764089 in words is "two trillion, six hundred forty-two billion, nine hundred fifty-five million, seven hundred sixty-four thousand, eighty-nine".