20434020546 has 16 divisors (see below), whose sum is σ = 40869457344. Its totient is φ = 6811104144.

The previous prime is 20434020539. The next prime is 20434020557. The reversal of 20434020546 is 64502043402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267700 + ... + 335456.

It is an arithmetic number, because the mean of its divisors is an integer number (2554341084).

Almost surely, 2^20434020546 is an apocalyptic number.

20434020546 is an abundant number, since it is smaller than the sum of its proper divisors (20435436798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20434020546 is a wasteful number, since it uses less digits than its factorization.

20434020546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118025.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20434020546 its reverse (64502043402), we get a palindrome (84936063948).

The spelling of 20434020546 in words is "twenty billion, four hundred thirty-four million, twenty thousand, five hundred forty-six".