20331527029 has 6 divisors (see below), whose sum is σ = 22347876950. Its totient is φ = 18483206280.

The previous prime is 20331527017. The next prime is 20331527033. The reversal of 20331527029 is 92072513302.

It can be written as a sum of positive squares in only one way, i.e., 19494582129 + 836944900 = 139623^2 + 28930^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20331527029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331526985 and 20331527003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331527929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84014454 + ... + 84014695.

Almost surely, 2^20331527029 is an apocalyptic number.

It is an amenable number.

20331527029 is a deficient number, since it is larger than the sum of its proper divisors (2016349921).

20331527029 is a wasteful number, since it uses less digits than its factorization.

20331527029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168029171 (or 168029160 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 20331527029 in words is "twenty billion, three hundred thirty-one million, five hundred twenty-seven thousand, twenty-nine".