810691377340 has 48 divisors (see below), whose sum is σ = 1833516191808. Its totient is φ = 299314819584.

The previous prime is 810691377337. The next prime is 810691377367. The reversal of 810691377340 is 43773196018.

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, 4930089 + ... + 5091871.

It is an arithmetic number, because the mean of its divisors is an integer number (38198253996).

Almost surely, 2^810691377340 is an apocalyptic number.

It is an amenable number.

810691377340 is an abundant number, since it is smaller than the sum of its proper divisors (1022824814468).

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

810691377340 is a wasteful number, since it uses less digits than its factorization.

810691377340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181078 (or 181076 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 810691377340 in words is "eight hundred ten billion, six hundred ninety-one million, three hundred seventy-seven thousand, three hundred forty".