53773075361321 has 2 divisors, whose sum is σ = 53773075361322. Its totient is φ = 53773075361320.

The previous prime is 53773075361303. The next prime is 53773075361323. The reversal of 53773075361321 is 12316357037735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52323305245225 + 1449770116096 = 7233485^2 + 1204064^2 .

It is a cyclic number.

It is not a de Polignac number, because 53773075361321 - 2²² = 53773071167017 is a prime.

Together with 53773075361323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53773075361323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26886537680660 + 26886537680661.

It is an arithmetic number, because the mean of its divisors is an integer number (26886537680661).

Almost surely, 2^{53773075361321} is an apocalyptic number.

It is an amenable number.

53773075361321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53773075361321 is an equidigital number, since it uses as much as digits as its factorization.

53773075361321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8334900, while the sum is 53.

The spelling of 53773075361321 in words is "fifty-three trillion, seven hundred seventy-three billion, seventy-five million, three hundred sixty-one thousand, three hundred twenty-one".