53212643404621 has 2 divisors, whose sum is σ = 53212643404622. Its totient is φ = 53212643404620.

The previous prime is 53212643404607. The next prime is 53212643404643. The reversal of 53212643404621 is 12640434621235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39437633843721 + 13775009560900 = 6279939^2 + 3711470^2 .

It is a cyclic number.

It is not a de Polignac number, because 53212643404621 - 2²⁹ = 53212106533709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53212643474621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26606321702310 + 26606321702311.

It is an arithmetic number, because the mean of its divisors is an integer number (26606321702311).

Almost surely, 2^{53212643404621} is an apocalyptic number.

It is an amenable number.

53212643404621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53212643404621 is an equidigital number, since it uses as much as digits as its factorization.

53212643404621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 53212643404621 in words is "fifty-three trillion, two hundred twelve billion, six hundred forty-three million, four hundred four thousand, six hundred twenty-one".