811868143848 has 16 divisors (see below), whose sum is σ = 2029670359680. Its totient is φ = 270622714608.

The previous prime is 811868143837. The next prime is 811868143859. The reversal of 811868143848 is 848341868118.

It is an interprime number because it is at equal distance from previous prime (811868143837) and next prime (811868143859).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 811868143791 and 811868143800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16913919640 + ... + 16913919687.

It is an arithmetic number, because the mean of its divisors is an integer number (126854397480).

Almost surely, 2^811868143848 is an apocalyptic number.

It is an amenable number.

811868143848 is an abundant number, since it is smaller than the sum of its proper divisors (1217802215832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811868143848 is a wasteful number, since it uses less digits than its factorization.

811868143848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33827839336 (or 33827839332 counting only the distinct ones).

The product of its digits is 9437184, while the sum is 60.

The spelling of 811868143848 in words is "eight hundred eleven billion, eight hundred sixty-eight million, one hundred forty-three thousand, eight hundred forty-eight".