51543105232349 has 2 divisors, whose sum is σ = 51543105232350. Its totient is φ = 51543105232348.

The previous prime is 51543105232321. The next prime is 51543105232417. The reversal of 51543105232349 is 94323250134515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47167088908900 + 4376016323449 = 6867830^2 + 2091893^2 .

It is a cyclic number.

It is not a de Polignac number, because 51543105232349 - 2⁸ = 51543105232093 is a prime.

It is a super-2 number, since 2×51543105232349² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51543105232849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25771552616174 + 25771552616175.

It is an arithmetic number, because the mean of its divisors is an integer number (25771552616175).

Almost surely, 2^{51543105232349} is an apocalyptic number.

It is an amenable number.

51543105232349 is a deficient number, since it is larger than the sum of its proper divisors (1).

51543105232349 is an equidigital number, since it uses as much as digits as its factorization.

51543105232349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 51543105232349 in words is "fifty-one trillion, five hundred forty-three billion, one hundred five million, two hundred thirty-two thousand, three hundred forty-nine".