811284879144 has 64 divisors (see below), whose sum is σ = 2047430989440. Its totient is φ = 267875942400.

The previous prime is 811284879131. The next prime is 811284879161. The reversal of 811284879144 is 441978482118.

811284879144 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962184 + ... + 1596360.

It is an arithmetic number, because the mean of its divisors is an integer number (31991109210).

Almost surely, 2^811284879144 is an apocalyptic number.

It is an amenable number.

811284879144 is an abundant number, since it is smaller than the sum of its proper divisors (1236146110296).

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

811284879144 is a wasteful number, since it uses less digits than its factorization.

811284879144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634690 (or 634686 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 57.

The spelling of 811284879144 in words is "eight hundred eleven billion, two hundred eighty-four million, eight hundred seventy-nine thousand, one hundred forty-four".