20130084947779 has 32 divisors (see below), whose sum is σ = 21779349336000. Its totient is φ = 18534602870784.

The previous prime is 20130084947771. The next prime is 20130084947803. The reversal of 20130084947779 is 97774948003102.

It is not a de Polignac number, because 20130084947779 - 2³ = 20130084947771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130084947771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2434399657 + ... + 2434407925.

It is an arithmetic number, because the mean of its divisors is an integer number (680604666750).

Almost surely, 2^{20130084947779} is an apocalyptic number.

20130084947779 is a deficient number, since it is larger than the sum of its proper divisors (1649264388221).

20130084947779 is a wasteful number, since it uses less digits than its factorization.

20130084947779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15847.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 20130084947779 in words is "twenty trillion, one hundred thirty billion, eighty-four million, nine hundred forty-seven thousand, seven hundred seventy-nine".