51165416453 has 2 divisors, whose sum is σ = 51165416454. Its totient is φ = 51165416452.

The previous prime is 51165416347. The next prime is 51165416461. The reversal of 51165416453 is 35461456115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41558084164 + 9607332289 = 203858^2 + 98017^2 .

It is a cyclic number.

It is not a de Polignac number, because 51165416453 - 2¹⁶ = 51165350917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51165416453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51165416473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25582708226 + 25582708227.

It is an arithmetic number, because the mean of its divisors is an integer number (25582708227).

Almost surely, 2^51165416453 is an apocalyptic number.

It is an amenable number.

51165416453 is a deficient number, since it is larger than the sum of its proper divisors (1).

51165416453 is an equidigital number, since it uses as much as digits as its factorization.

51165416453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 41.

The spelling of 51165416453 in words is "fifty-one billion, one hundred sixty-five million, four hundred sixteen thousand, four hundred fifty-three".