810838772772 has 48 divisors (see below), whose sum is σ = 2162446392960. Its totient is φ = 231645756672.

The previous prime is 810838772699. The next prime is 810838772797. The reversal of 810838772772 is 277277838018.

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, 413248 + ... + 1338824.

It is an arithmetic number, because the mean of its divisors is an integer number (45050966520).

Almost surely, 2^810838772772 is an apocalyptic number.

It is an amenable number.

810838772772 is an abundant number, since it is smaller than the sum of its proper divisors (1351607620188).

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

810838772772 is a wasteful number, since it uses less digits than its factorization.

810838772772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936020 (or 936018 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 60.

The spelling of 810838772772 in words is "eight hundred ten billion, eight hundred thirty-eight million, seven hundred seventy-two thousand, seven hundred seventy-two".