2638298102891 has 32 divisors (see below), whose sum is σ = 3042252691200. Its totient is φ = 2262755088000.

The previous prime is 2638298102857. The next prime is 2638298102903. The reversal of 2638298102891 is 1982018928362.

2638298102891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2638298102891 - 2¹⁴ = 2638298086507 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 2638298102891.

It is not an unprimeable number, because it can be changed into a prime (2638298101891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142286081 + ... + 142304621.

It is an arithmetic number, because the mean of its divisors is an integer number (95070396600).

Almost surely, 2^{2638298102891} is an apocalyptic number.

2638298102891 is a deficient number, since it is larger than the sum of its proper divisors (403954588309).

2638298102891 is a wasteful number, since it uses less digits than its factorization.

2638298102891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371.

The product of its (nonzero) digits is 5971968, while the sum is 59.

The spelling of 2638298102891 in words is "two trillion, six hundred thirty-eight billion, two hundred ninety-eight million, one hundred two thousand, eight hundred ninety-one".