820056118999 has 12 divisors (see below), whose sum is σ = 888028580136. Its totient is φ = 756941788512.

The previous prime is 820056118963. The next prime is 820056119023. The reversal of 820056118999 is 999811650028.

It is not a de Polignac number, because 820056118999 - 2¹³ = 820056110807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821056118999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4315009 + ... + 4501045.

It is an arithmetic number, because the mean of its divisors is an integer number (74002381678).

Almost surely, 2^820056118999 is an apocalyptic number.

820056118999 is a deficient number, since it is larger than the sum of its proper divisors (67972461137).

820056118999 is a wasteful number, since it uses less digits than its factorization.

820056118999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212146 (or 212133 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 58.

The spelling of 820056118999 in words is "eight hundred twenty billion, fifty-six million, one hundred eighteen thousand, nine hundred ninety-nine".