20928382928211 has 16 divisors (see below), whose sum is σ = 30441512239488. Its totient is φ = 12683773449600.

The previous prime is 20928382928209. The next prime is 20928382928231. The reversal of 20928382928211 is 11282928382902.

It is not a de Polignac number, because 20928382928211 - 2¹ = 20928382928209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20928382928231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2231691 + ... + 6843771.

It is an arithmetic number, because the mean of its divisors is an integer number (1902594514968).

Almost surely, 2^{20928382928211} is an apocalyptic number.

20928382928211 is a deficient number, since it is larger than the sum of its proper divisors (9513129311277).

20928382928211 is a wasteful number, since it uses less digits than its factorization.

20928382928211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749602.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 20928382928211 in words is "twenty trillion, nine hundred twenty-eight billion, three hundred eighty-two million, nine hundred twenty-eight thousand, two hundred eleven".