20011423043 has 8 divisors (see below), whose sum is σ = 20092140288. Its totient is φ = 19930741384.

The previous prime is 20011423021. The next prime is 20011423109. The reversal of 20011423043 is 34032411002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011423043 - 2⁸ = 20011422787 is a prime.

It is a super-2 number, since 2×20011423043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011428043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2074730 + ... + 2084352.

It is an arithmetic number, because the mean of its divisors is an integer number (2511517536).

Almost surely, 2^20011423043 is an apocalyptic number.

20011423043 is a deficient number, since it is larger than the sum of its proper divisors (80717245).

20011423043 is an equidigital number, since it uses as much as digits as its factorization.

20011423043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793.

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

Adding to 20011423043 its reverse (34032411002), we get a palindrome (54043834045).

The spelling of 20011423043 in words is "twenty billion, eleven million, four hundred twenty-three thousand, forty-three".