20331145441 has 2 divisors, whose sum is σ = 20331145442. Its totient is φ = 20331145440.

The previous prime is 20331145423. The next prime is 20331145459. The reversal of 20331145441 is 14454113302.

It is a balanced prime because it is at equal distance from previous prime (20331145423) and next prime (20331145459).

It can be written as a sum of positive squares in only one way, i.e., 10436665600 + 9894479841 = 102160^2 + 99471^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331145441 - 2¹⁵ = 20331112673 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331145411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165572720 + 10165572721.

It is an arithmetic number, because the mean of its divisors is an integer number (10165572721).

Almost surely, 2^20331145441 is an apocalyptic number.

It is an amenable number.

20331145441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331145441 is an equidigital number, since it uses as much as digits as its factorization.

20331145441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20331145441 its reverse (14454113302), we get a palindrome (34785258743).

The spelling of 20331145441 in words is "twenty billion, three hundred thirty-one million, one hundred forty-five thousand, four hundred forty-one".