20424044213029 has 4 divisors (see below), whose sum is σ = 20425773171276. Its totient is φ = 20422315254784.

The previous prime is 20424044213021. The next prime is 20424044213063. The reversal of 20424044213029 is 92031244042402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15513397077025 + 4910647136004 = 3938705^2 + 2215998^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424044213029 - 2³ = 20424044213021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424044213021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864461404 + ... + 864485029.

It is an arithmetic number, because the mean of its divisors is an integer number (5106443292819).

Almost surely, 2^{20424044213029} is an apocalyptic number.

It is an amenable number.

20424044213029 is a deficient number, since it is larger than the sum of its proper divisors (1728958247).

20424044213029 is a wasteful number, since it uses less digits than its factorization.

20424044213029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728958246.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 20424044213029 in words is "twenty trillion, four hundred twenty-four billion, forty-four million, two hundred thirteen thousand, twenty-nine".