810211777716 has 96 divisors (see below), whose sum is σ = 2081343600000. Its totient is φ = 243259985920.

The previous prime is 810211777693. The next prime is 810211777757. The reversal of 810211777716 is 617777112018.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51437410 + ... + 51453158.

It is an arithmetic number, because the mean of its divisors is an integer number (21680662500).

Almost surely, 2^810211777716 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 810211777716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040671800000).

810211777716 is an abundant number, since it is smaller than the sum of its proper divisors (1271131822284).

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

810211777716 is a wasteful number, since it uses less digits than its factorization.

810211777716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19329 (or 19327 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 48.

The spelling of 810211777716 in words is "eight hundred ten billion, two hundred eleven million, seven hundred seventy-seven thousand, seven hundred sixteen".