553364647021 has 2 divisors, whose sum is σ = 553364647022. Its totient is φ = 553364647020.

The previous prime is 553364647009. The next prime is 553364647139. The reversal of 553364647021 is 120746463355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391487976100 + 161876670921 = 625690^2 + 402339^2 .

It is a cyclic number.

It is not a de Polignac number, because 553364647021 - 2⁷ = 553364646893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553364647001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276682323510 + 276682323511.

It is an arithmetic number, because the mean of its divisors is an integer number (276682323511).

Almost surely, 2^553364647021 is an apocalyptic number.

It is an amenable number.

553364647021 is a deficient number, since it is larger than the sum of its proper divisors (1).

553364647021 is an equidigital number, since it uses as much as digits as its factorization.

553364647021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 553364647021 in words is "five hundred fifty-three billion, three hundred sixty-four million, six hundred forty-seven thousand, twenty-one".