820270840080 has 80 divisors (see below), whose sum is σ = 2624866712064. Its totient is φ = 211682795520.

The previous prime is 820270840043. The next prime is 820270840091. The reversal of 820270840080 is 80048072028.

It is a tau number, because it is divible by the number of its divisors (80).

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, 55118289 + ... + 55133168.

Almost surely, 2^820270840080 is an apocalyptic number.

820270840080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

820270840080 is an abundant number, since it is smaller than the sum of its proper divisors (1804595871984).

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

820270840080 is a wasteful number, since it uses less digits than its factorization.

820270840080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110251504 (or 110251498 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The spelling of 820270840080 in words is "eight hundred twenty billion, two hundred seventy million, eight hundred forty thousand, eighty".