810894954872 has 8 divisors (see below), whose sum is σ = 1520428040400. Its totient is φ = 405447477432.

The previous prime is 810894954871. The next prime is 810894954911. The reversal of 810894954872 is 278459498018.

810894954872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 810894954799 and 810894954808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810894954871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50680934672 + ... + 50680934687.

It is an arithmetic number, because the mean of its divisors is an integer number (190053505050).

Almost surely, 2^810894954872 is an apocalyptic number.

It is an amenable number.

810894954872 is a deficient number, since it is larger than the sum of its proper divisors (709533085528).

810894954872 is a wasteful number, since it uses less digits than its factorization.

810894954872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101361869365 (or 101361869361 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 65.

The spelling of 810894954872 in words is "eight hundred ten billion, eight hundred ninety-four million, nine hundred fifty-four thousand, eight hundred seventy-two".