20411020777016 has 8 divisors (see below), whose sum is σ = 38270663956920. Its totient is φ = 10205510388504.

The previous prime is 20411020777001. The next prime is 20411020777019. The reversal of 20411020777016 is 61077702011402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411020777019) 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 as a sum of consecutive naturals, namely, 1275688798556 + ... + 1275688798571.

It is an arithmetic number, because the mean of its divisors is an integer number (4783832994615).

Almost surely, 2^{20411020777016} is an apocalyptic number.

It is an amenable number.

20411020777016 is a deficient number, since it is larger than the sum of its proper divisors (17859643179904).

20411020777016 is a wasteful number, since it uses less digits than its factorization.

20411020777016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551377597133 (or 2551377597129 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

Adding to 20411020777016 its reverse (61077702011402), we get a palindrome (81488722788418).

The spelling of 20411020777016 in words is "twenty trillion, four hundred eleven billion, twenty million, seven hundred seventy-seven thousand, sixteen".