2681797958191 has 4 divisors (see below), whose sum is σ = 2925597772584. Its totient is φ = 2437998143800.

The previous prime is 2681797958171. The next prime is 2681797958197. The reversal of 2681797958191 is 1918597971862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2681797958191 - 2¹¹ = 2681797956143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681797958197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121899907180 + ... + 121899907201.

It is an arithmetic number, because the mean of its divisors is an integer number (731399443146).

Almost surely, 2^{2681797958191} is an apocalyptic number.

2681797958191 is a deficient number, since it is larger than the sum of its proper divisors (243799814393).

2681797958191 is a wasteful number, since it uses less digits than its factorization.

2681797958191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243799814392.

The product of its digits is 137168640, while the sum is 73.

The spelling of 2681797958191 in words is "two trillion, six hundred eighty-one billion, seven hundred ninety-seven million, nine hundred fifty-eight thousand, one hundred ninety-one".