2678451838841 has 4 divisors (see below), whose sum is σ = 2678530256784. Its totient is φ = 2678373420900.

The previous prime is 2678451838819. The next prime is 2678451838927. The reversal of 2678451838841 is 1488381548762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2678451838841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2678451838441) 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, 39157715 + ... + 39226056.

It is an arithmetic number, because the mean of its divisors is an integer number (669632564196).

Almost surely, 2^{2678451838841} is an apocalyptic number.

It is an amenable number.

2678451838841 is a deficient number, since it is larger than the sum of its proper divisors (78417943).

2678451838841 is an equidigital number, since it uses as much as digits as its factorization.

2678451838841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78417942.

The product of its digits is 82575360, while the sum is 65.

The spelling of 2678451838841 in words is "two trillion, six hundred seventy-eight billion, four hundred fifty-one million, eight hundred thirty-eight thousand, eight hundred forty-one".