20331303331147 has 2 divisors, whose sum is σ = 20331303331148. Its totient is φ = 20331303331146.

The previous prime is 20331303331123. The next prime is 20331303331169. The reversal of 20331303331147 is 74113330313302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331303331147 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331303331187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165651665573 + 10165651665574.

It is an arithmetic number, because the mean of its divisors is an integer number (10165651665574).

Almost surely, 2^{20331303331147} is an apocalyptic number.

20331303331147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331303331147 is an equidigital number, since it uses as much as digits as its factorization.

20331303331147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 34.

Adding to 20331303331147 its reverse (74113330313302), we get a palindrome (94444633644449).

The spelling of 20331303331147 in words is "twenty trillion, three hundred thirty-one billion, three hundred three million, three hundred thirty-one thousand, one hundred forty-seven".