53133818321 has 2 divisors, whose sum is σ = 53133818322. Its totient is φ = 53133818320.

The previous prime is 53133818317. The next prime is 53133818407. The reversal of 53133818321 is 12381833135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53130250000 + 3568321 = 230500^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 53133818321 - 2² = 53133818317 is a prime.

It is not a weakly prime, because it can be changed into another prime (53133818921) 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, 26566909160 + 26566909161.

It is an arithmetic number, because the mean of its divisors is an integer number (26566909161).

Almost surely, 2^53133818321 is an apocalyptic number.

It is an amenable number.

53133818321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53133818321 is an equidigital number, since it uses as much as digits as its factorization.

53133818321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The spelling of 53133818321 in words is "fifty-three billion, one hundred thirty-three million, eight hundred eighteen thousand, three hundred twenty-one".