5641632005021 has 2 divisors, whose sum is σ = 5641632005022. Its totient is φ = 5641632005020.

The previous prime is 5641632004973. The next prime is 5641632005041. The reversal of 5641632005021 is 1205002361465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5596011316921 + 45620688100 = 2365589^2 + 213590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5641632005021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5641632005041) 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, 2820816002510 + 2820816002511.

It is an arithmetic number, because the mean of its divisors is an integer number (2820816002511).

Almost surely, 2^{5641632005021} is an apocalyptic number.

It is an amenable number.

5641632005021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5641632005021 is an equidigital number, since it uses as much as digits as its factorization.

5641632005021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 5641632005021 its reverse (1205002361465), we get a palindrome (6846634366486).

The spelling of 5641632005021 in words is "five trillion, six hundred forty-one billion, six hundred thirty-two million, five thousand, twenty-one".