820834462071 has 112 divisors (see below), whose sum is σ = 1337250593952. Its totient is φ = 500618880000.

The previous prime is 820834462069. The next prime is 820834462099. The reversal of 820834462071 is 170264438028.

It is a happy number.

It is not a de Polignac number, because 820834462071 - 2¹ = 820834462069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820834482071) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 554242651 + ... + 554244131.

It is an arithmetic number, because the mean of its divisors is an integer number (11939737446).

Almost surely, 2^820834462071 is an apocalyptic number.

820834462071 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

820834462071 is a deficient number, since it is larger than the sum of its proper divisors (516416131881).

820834462071 is a wasteful number, since it uses less digits than its factorization.

820834462071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 820834462071 in words is "eight hundred twenty billion, eight hundred thirty-four million, four hundred sixty-two thousand, seventy-one".