20514424111 has 2 divisors, whose sum is σ = 20514424112. Its totient is φ = 20514424110.

The previous prime is 20514424103. The next prime is 20514424141. The reversal of 20514424111 is 11142441502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20514424111 - 2³ = 20514424103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20514424141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10257212055 + 10257212056.

It is an arithmetic number, because the mean of its divisors is an integer number (10257212056).

Almost surely, 2^20514424111 is an apocalyptic number.

20514424111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20514424111 is an equidigital number, since it uses as much as digits as its factorization.

20514424111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 20514424111 its reverse (11142441502), we get a palindrome (31656865613).

The spelling of 20514424111 in words is "twenty billion, five hundred fourteen million, four hundred twenty-four thousand, one hundred eleven".