20134104647 has 2 divisors, whose sum is σ = 20134104648. Its totient is φ = 20134104646.

The previous prime is 20134104587. The next prime is 20134104677. The reversal of 20134104647 is 74640143102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20134104647 - 2⁶ = 20134104583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20134104677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067052323 + 10067052324.

It is an arithmetic number, because the mean of its divisors is an integer number (10067052324).

Almost surely, 2^20134104647 is an apocalyptic number.

20134104647 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134104647 is an equidigital number, since it uses as much as digits as its factorization.

20134104647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 20134104647 its reverse (74640143102), we get a palindrome (94774247749).

The spelling of 20134104647 in words is "twenty billion, one hundred thirty-four million, one hundred four thousand, six hundred forty-seven".