810040085648 has 10 divisors (see below), whose sum is σ = 1569452665974. Its totient is φ = 405020042816.

The previous prime is 810040085627. The next prime is 810040085669. The reversal of 810040085648 is 846580040018.

It is an interprime number because it is at equal distance from previous prime (810040085627) and next prime (810040085669).

It can be written as a sum of positive squares in only one way, i.e., 655471590544 + 154568495104 = 809612^2 + 393152^2 .

It is a junction number, because it is equal to n+sod(n) for n = 810040085599 and 810040085608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25313752661 + ... + 25313752692.

Almost surely, 2^810040085648 is an apocalyptic number.

It is an amenable number.

810040085648 is a deficient number, since it is larger than the sum of its proper divisors (759412580326).

810040085648 is a wasteful number, since it uses less digits than its factorization.

810040085648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50627505361 (or 50627505355 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 810040085648 in words is "eight hundred ten billion, forty million, eighty-five thousand, six hundred forty-eight".