52663345421 has 2 divisors, whose sum is σ = 52663345422. Its totient is φ = 52663345420.

The previous prime is 52663345351. The next prime is 52663345429. The reversal of 52663345421 is 12454336625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48345015625 + 4318329796 = 219875^2 + 65714^2 .

It is a cyclic number.

It is not a de Polignac number, because 52663345421 - 2²⁶ = 52596236557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52663345429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26331672710 + 26331672711.

It is an arithmetic number, because the mean of its divisors is an integer number (26331672711).

Almost surely, 2^52663345421 is an apocalyptic number.

It is an amenable number.

52663345421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52663345421 is an equidigital number, since it uses as much as digits as its factorization.

52663345421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 41.

The spelling of 52663345421 in words is "fifty-two billion, six hundred sixty-three million, three hundred forty-five thousand, four hundred twenty-one".