811110840349 has 4 divisors (see below), whose sum is σ = 811272324736. Its totient is φ = 810949355964.

The previous prime is 811110840343. The next prime is 811110840361. The reversal of 811110840349 is 943048011118.

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 not a de Polignac number, because 811110840349 - 2¹⁵ = 811110807581 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 (811110840343) 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, 80734659 + ... + 80744704.

It is an arithmetic number, because the mean of its divisors is an integer number (202818081184).

Almost surely, 2^811110840349 is an apocalyptic number.

It is an amenable number.

811110840349 is a deficient number, since it is larger than the sum of its proper divisors (161484387).

811110840349 is a wasteful number, since it uses less digits than its factorization.

811110840349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161484386.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 811110840349 in words is "eight hundred eleven billion, one hundred ten million, eight hundred forty thousand, three hundred forty-nine".