20001641147 has 2 divisors, whose sum is σ = 20001641148. Its totient is φ = 20001641146.

The previous prime is 20001641141. The next prime is 20001641171. The reversal of 20001641147 is 74114610002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001641147 - 2⁶ = 20001641083 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001641141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000820573 + 10000820574.

It is an arithmetic number, because the mean of its divisors is an integer number (10000820574).

Almost surely, 2^20001641147 is an apocalyptic number.

20001641147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001641147 is an equidigital number, since it uses as much as digits as its factorization.

20001641147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 20001641147 in words is "twenty billion, one million, six hundred forty-one thousand, one hundred forty-seven".