811551160 has 64 divisors (see below), whose sum is σ = 2107581120. Its totient is φ = 275481600.

The previous prime is 811551149. The next prime is 811551173. The reversal of 811551160 is 61155118.

811551160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 13932 + ... + 42628.

It is an arithmetic number, because the mean of its divisors is an integer number (32930955).

Almost surely, 2^811551160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811551160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1053790560).

811551160 is an abundant number, since it is smaller than the sum of its proper divisors (1296029960).

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

811551160 is a wasteful number, since it uses less digits than its factorization.

811551160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28816 (or 28812 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 811551160 is about 28487.7370108614. The cubic root of 811551160 is about 932.7644112151.

The spelling of 811551160 in words is "eight hundred eleven million, five hundred fifty-one thousand, one hundred sixty".