20434444043 has 16 divisors (see below), whose sum is σ = 22576636320. Its totient is φ = 18379954944.

The previous prime is 20434444033. The next prime is 20434444117. The reversal of 20434444043 is 34044443402.

It is not a de Polignac number, because 20434444043 - 2⁸ = 20434443787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434444033) 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, 50948 + ... + 208481.

It is an arithmetic number, because the mean of its divisors is an integer number (1411039770).

Almost surely, 2^20434444043 is an apocalyptic number.

20434444043 is a deficient number, since it is larger than the sum of its proper divisors (2142192277).

20434444043 is a wasteful number, since it uses less digits than its factorization.

20434444043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259598.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20434444043 its reverse (34044443402), we get a palindrome (54478887445).

The spelling of 20434444043 in words is "twenty billion, four hundred thirty-four million, four hundred forty-four thousand, forty-three".