20331458461 has 2 divisors, whose sum is σ = 20331458462. Its totient is φ = 20331458460.

The previous prime is 20331458437. The next prime is 20331458479. The reversal of 20331458461 is 16485413302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15476852836 + 4854605625 = 124406^2 + 69675^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331458461 - 2⁵ = 20331458429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20331458461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331458761) 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 as a sum of consecutive naturals, namely, 10165729230 + 10165729231.

It is an arithmetic number, because the mean of its divisors is an integer number (10165729231).

Almost surely, 2^20331458461 is an apocalyptic number.

It is an amenable number.

20331458461 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331458461 is an equidigital number, since it uses as much as digits as its factorization.

20331458461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20331458461 in words is "twenty billion, three hundred thirty-one million, four hundred fifty-eight thousand, four hundred sixty-one".