200020149971 has 2 divisors, whose sum is σ = 200020149972. Its totient is φ = 200020149970.

The previous prime is 200020149943. The next prime is 200020150019. The reversal of 200020149971 is 179941020002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200020149971 is a prime.

It is not a weakly prime, because it can be changed into another prime (200020149671) 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, 100010074985 + 100010074986.

It is an arithmetic number, because the mean of its divisors is an integer number (100010074986).

Almost surely, 2^200020149971 is an apocalyptic number.

200020149971 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020149971 is an equidigital number, since it uses as much as digits as its factorization.

200020149971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

Adding to 200020149971 its reverse (179941020002), we get a palindrome (379961169973).

The spelling of 200020149971 in words is "two hundred billion, twenty million, one hundred forty-nine thousand, nine hundred seventy-one".