805100998020 has 192 divisors, whose sum is σ = 2559262003200. Its totient is φ = 187316631040.

The previous prime is 805100998001. The next prime is 805100998027. The reversal of 805100998020 is 20899001508.

It is a happy number.

805100998020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (805100998027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3070441 + ... + 3322319.

It is an arithmetic number, because the mean of its divisors is an integer number (13329489600).

Almost surely, 2^805100998020 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 805100998020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279631001600).

805100998020 is an abundant number, since it is smaller than the sum of its proper divisors (1754161005180).

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

805100998020 is a wasteful number, since it uses less digits than its factorization.

805100998020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252098 (or 252096 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

Adding to 805100998020 its reverse (20899001508), we get a palindrome (825999999528).

The spelling of 805100998020 in words is "eight hundred five billion, one hundred million, nine hundred ninety-eight thousand, twenty".