20512404007 has 2 divisors, whose sum is σ = 20512404008. Its totient is φ = 20512404006.

The previous prime is 20512403953. The next prime is 20512404041. The reversal of 20512404007 is 70040421502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20512404007 - 2³¹ = 18364920359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20512402007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256202003 + 10256202004.

It is an arithmetic number, because the mean of its divisors is an integer number (10256202004).

Almost surely, 2^20512404007 is an apocalyptic number.

20512404007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512404007 is an equidigital number, since it uses as much as digits as its factorization.

20512404007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

Adding to 20512404007 its reverse (70040421502), we get a palindrome (90552825509).

The spelling of 20512404007 in words is "twenty billion, five hundred twelve million, four hundred four thousand, seven".