20013141971 has 2 divisors, whose sum is σ = 20013141972. Its totient is φ = 20013141970.

The previous prime is 20013141923. The next prime is 20013141977. The reversal of 20013141971 is 17914131002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013141971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20013141977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006570985 + 10006570986.

It is an arithmetic number, because the mean of its divisors is an integer number (10006570986).

Almost surely, 2^20013141971 is an apocalyptic number.

20013141971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013141971 is an equidigital number, since it uses as much as digits as its factorization.

20013141971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 20013141971 its reverse (17914131002), we get a palindrome (37927272973).

The spelling of 20013141971 in words is "twenty billion, thirteen million, one hundred forty-one thousand, nine hundred seventy-one".