20040424111 has 2 divisors, whose sum is σ = 20040424112. Its totient is φ = 20040424110.

The previous prime is 20040424099. The next prime is 20040424139. The reversal of 20040424111 is 11142404002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20040424111 - 2¹³ = 20040415919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20040424171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020212055 + 10020212056.

It is an arithmetic number, because the mean of its divisors is an integer number (10020212056).

Almost surely, 2^20040424111 is an apocalyptic number.

20040424111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040424111 is an equidigital number, since it uses as much as digits as its factorization.

20040424111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20040424111 its reverse (11142404002), we get a palindrome (31182828113).

The spelling of 20040424111 in words is "twenty billion, forty million, four hundred twenty-four thousand, one hundred eleven".