51161606264459 has 2 divisors, whose sum is σ = 51161606264460. Its totient is φ = 51161606264458.

The previous prime is 51161606264411. The next prime is 51161606264497. The reversal of 51161606264459 is 95446260616115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51161606264459 - 2²⁴ = 51161589487243 is a prime.

It is not a weakly prime, because it can be changed into another prime (51161606204459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580803132229 + 25580803132230.

It is an arithmetic number, because the mean of its divisors is an integer number (25580803132230).

Almost surely, 2^{51161606264459} is an apocalyptic number.

51161606264459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51161606264459 is an equidigital number, since it uses as much as digits as its factorization.

51161606264459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 51161606264459 in words is "fifty-one trillion, one hundred sixty-one billion, six hundred six million, two hundred sixty-four thousand, four hundred fifty-nine".