811166852311 has 4 divisors (see below), whose sum is σ = 824464669624. Its totient is φ = 797869035000.

The previous prime is 811166852267. The next prime is 811166852369. The reversal of 811166852311 is 113258661118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113258661118 = 2 ⋅56629330559.

It is a cyclic number.

It is not a de Polignac number, because 811166852311 - 2¹⁹ = 811166328023 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 (811166852411) 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, 6648908565 + ... + 6648908686.

It is an arithmetic number, because the mean of its divisors is an integer number (206116167406).

Almost surely, 2^811166852311 is an apocalyptic number.

811166852311 is a deficient number, since it is larger than the sum of its proper divisors (13297817313).

811166852311 is a wasteful number, since it uses less digits than its factorization.

811166852311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13297817312.

The product of its digits is 69120, while the sum is 43.

The spelling of 811166852311 in words is "eight hundred eleven billion, one hundred sixty-six million, eight hundred fifty-two thousand, three hundred eleven".