20011014423 has 6 divisors (see below), whose sum is σ = 28904798624. Its totient is φ = 13340676276.

The previous prime is 20011014421. The next prime is 20011014427. The reversal of 20011014423 is 32441011002.

It is not a de Polignac number, because 20011014423 - 2¹ = 20011014421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011014396 and 20011014405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011014421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111723015 + ... + 1111723032.

Almost surely, 2^20011014423 is an apocalyptic number.

20011014423 is a deficient number, since it is larger than the sum of its proper divisors (8893784201).

20011014423 is a wasteful number, since it uses less digits than its factorization.

20011014423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223446053 (or 2223446050 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20011014423 its reverse (32441011002), we get a palindrome (52452025425).

The spelling of 20011014423 in words is "twenty billion, eleven million, fourteen thousand, four hundred twenty-three".