9101819202020 has 48 divisors (see below), whose sum is σ = 19376701727040. Its totient is φ = 3590952203904.

The previous prime is 9101819202011. The next prime is 9101819202059. The reversal of 9101819202020 is 202029181019.

It is a super-2 number, since 2×9101819202020² (a number of 27 digits) contains 22 as substring.

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, 8796374 + ... + 9776493.

It is an arithmetic number, because the mean of its divisors is an integer number (403681285980).

Almost surely, 2^{9101819202020} is an apocalyptic number.

It is an amenable number.

9101819202020 is an abundant number, since it is smaller than the sum of its proper divisors (10274882525020).

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

9101819202020 is a wasteful number, since it uses less digits than its factorization.

9101819202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18573212 (or 18573210 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 9101819202020 in words is "nine trillion, one hundred one billion, eight hundred nineteen million, two hundred two thousand, twenty".