6641663053 has 2 divisors, whose sum is σ = 6641663054. Its totient is φ = 6641663052.

The previous prime is 6641663029. The next prime is 6641663069. The reversal of 6641663053 is 3503661466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5440832644 + 1200830409 = 73762^2 + 34653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6641663053 is a prime.

It is a super-2 number, since 2×6641663053² = 88223376219170561618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6641662997 and 6641663015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6641663023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320831526 + 3320831527.

It is an arithmetic number, because the mean of its divisors is an integer number (3320831527).

Almost surely, 2^6641663053 is an apocalyptic number.

It is an amenable number.

6641663053 is a deficient number, since it is larger than the sum of its proper divisors (1).

6641663053 is an equidigital number, since it uses as much as digits as its factorization.

6641663053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 6641663053 is about 81496.3990186070. The cubic root of 6641663053 is about 1879.7161798984.

The spelling of 6641663053 in words is "six billion, six hundred forty-one million, six hundred sixty-three thousand, fifty-three".