6810531050891 has 4 divisors (see below), whose sum is σ = 6820960654992. Its totient is φ = 6800101446792.

The previous prime is 6810531050861. The next prime is 6810531050941. The reversal of 6810531050891 is 1980501350186.

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 6810531050891 - 2²² = 6810526856587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6810531050821) 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, 5214801071 + ... + 5214802376.

It is an arithmetic number, because the mean of its divisors is an integer number (1705240163748).

Almost surely, 2^{6810531050891} is an apocalyptic number.

6810531050891 is a deficient number, since it is larger than the sum of its proper divisors (10429604101).

6810531050891 is a wasteful number, since it uses less digits than its factorization.

6810531050891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429604100.

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 6810531050891 in words is "six trillion, eight hundred ten billion, five hundred thirty-one million, fifty thousand, eight hundred ninety-one".