20434013211 has 16 divisors (see below), whose sum is σ = 28438214400. Its totient is φ = 13026588960.

The previous prime is 20434013143. The next prime is 20434013221. The reversal of 20434013211 is 11231043402.

It is not a de Polignac number, because 20434013211 - 2¹⁵ = 20433980443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20434013221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205740 + ... + 288438.

It is an arithmetic number, because the mean of its divisors is an integer number (1777388400).

Almost surely, 2^20434013211 is an apocalyptic number.

20434013211 is a deficient number, since it is larger than the sum of its proper divisors (8004201189).

20434013211 is a wasteful number, since it uses less digits than its factorization.

20434013211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86306.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20434013211 its reverse (11231043402), we get a palindrome (31665056613).

The spelling of 20434013211 in words is "twenty billion, four hundred thirty-four million, thirteen thousand, two hundred eleven".