20434534611 has 8 divisors (see below), whose sum is σ = 27246739344. Its totient is φ = 13622676480.

The previous prime is 20434534579. The next prime is 20434534639. The reversal of 20434534611 is 11643543402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20434534611 - 2⁵ = 20434534579 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20434534511) 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 7 ways as a sum of consecutive naturals, for example, 124251 + ... + 237291.

It is an arithmetic number, because the mean of its divisors is an integer number (3405842418).

Almost surely, 2^20434534611 is an apocalyptic number.

20434534611 is a deficient number, since it is larger than the sum of its proper divisors (6812204733).

20434534611 is a wasteful number, since it uses less digits than its factorization.

20434534611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173301.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 20434534611 in words is "twenty billion, four hundred thirty-four million, five hundred thirty-four thousand, six hundred eleven".