20034369871 has 2 divisors, whose sum is σ = 20034369872. Its totient is φ = 20034369870.

The previous prime is 20034369863. The next prime is 20034369893. The reversal of 20034369871 is 17896343002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20034369871 - 2³ = 20034369863 is a prime.

It is a super-2 number, since 2×20034369871² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20034369841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017184935 + 10017184936.

It is an arithmetic number, because the mean of its divisors is an integer number (10017184936).

Almost surely, 2^20034369871 is an apocalyptic number.

20034369871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20034369871 is an equidigital number, since it uses as much as digits as its factorization.

20034369871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 20034369871 in words is "twenty billion, thirty-four million, three hundred sixty-nine thousand, eight hundred seventy-one".