20331527017 has 2 divisors, whose sum is σ = 20331527018. Its totient is φ = 20331527016.

The previous prime is 20331527003. The next prime is 20331527033. The reversal of 20331527017 is 71072513302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14405760576 + 5925766441 = 120024^2 + 76979^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331527017 - 2⁷ = 20331526889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20331527017.

It is not a weakly prime, because it can be changed into another prime (20331522017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165763508 + 10165763509.

It is an arithmetic number, because the mean of its divisors is an integer number (10165763509).

Almost surely, 2^20331527017 is an apocalyptic number.

It is an amenable number.

20331527017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331527017 is an equidigital number, since it uses as much as digits as its factorization.

20331527017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The spelling of 20331527017 in words is "twenty billion, three hundred thirty-one million, five hundred twenty-seven thousand, seventeen".