51566000314421 has 2 divisors, whose sum is σ = 51566000314422. Its totient is φ = 51566000314420.

The previous prime is 51566000314369. The next prime is 51566000314429. The reversal of 51566000314421 is 12441300066515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51030306602500 + 535693711921 = 7143550^2 + 731911^2 .

It is a cyclic number.

It is not a de Polignac number, because 51566000314421 - 2⁶ = 51566000314357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51566000314429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25783000157210 + 25783000157211.

It is an arithmetic number, because the mean of its divisors is an integer number (25783000157211).

Almost surely, 2^{51566000314421} is an apocalyptic number.

It is an amenable number.

51566000314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

51566000314421 is an equidigital number, since it uses as much as digits as its factorization.

51566000314421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 51566000314421 in words is "fifty-one trillion, five hundred sixty-six billion, three hundred fourteen thousand, four hundred twenty-one".