20434442442 has 16 divisors (see below), whose sum is σ = 43272937152. Its totient is φ = 6410805440.

The previous prime is 20434442429. The next prime is 20434442471. The reversal of 20434442442 is 24424443402.

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, 100168734 + ... + 100168937.

It is an arithmetic number, because the mean of its divisors is an integer number (2704558572).

Almost surely, 2^20434442442 is an apocalyptic number.

20434442442 is an abundant number, since it is smaller than the sum of its proper divisors (22838494710).

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

20434442442 is a wasteful number, since it uses less digits than its factorization.

20434442442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200337693.

The product of its (nonzero) digits is 98304, while the sum is 33.

Adding to 20434442442 its reverse (24424443402), we get a palindrome (44858885844).

The spelling of 20434442442 in words is "twenty billion, four hundred thirty-four million, four hundred forty-two thousand, four hundred forty-two".