811871822378 has 16 divisors (see below), whose sum is σ = 1314575066880. Its totient is φ = 374897332656.

The previous prime is 811871822353. The next prime is 811871822381. The reversal of 811871822378 is 873228178118.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304298450 + ... + 304301117.

It is an arithmetic number, because the mean of its divisors is an integer number (82160941680).

Almost surely, 2^811871822378 is an apocalyptic number.

811871822378 is a deficient number, since it is larger than the sum of its proper divisors (502703244502).

811871822378 is a wasteful number, since it uses less digits than its factorization.

811871822378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608599621.

The product of its digits is 2408448, while the sum is 56.

The spelling of 811871822378 in words is "eight hundred eleven billion, eight hundred seventy-one million, eight hundred twenty-two thousand, three hundred seventy-eight".