20011320434 has 8 divisors (see below), whose sum is σ = 34305120768. Its totient is φ = 8576280180.

The previous prime is 20011320383. The next prime is 20011320437. The reversal of 20011320434 is 43402311002.

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

It is not an unprimeable number, because it can be changed into a prime (20011320437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714690002 + ... + 714690029.

It is an arithmetic number, because the mean of its divisors is an integer number (4288140096).

Almost surely, 2^20011320434 is an apocalyptic number.

20011320434 is a deficient number, since it is larger than the sum of its proper divisors (14293800334).

20011320434 is a wasteful number, since it uses less digits than its factorization.

20011320434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429380040.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20011320434 its reverse (43402311002), we get a palindrome (63413631436).

The spelling of 20011320434 in words is "twenty billion, eleven million, three hundred twenty thousand, four hundred thirty-four".