51163325459 has 4 divisors (see below), whose sum is σ = 51242895816. Its totient is φ = 51083755104.

The previous prime is 51163325431. The next prime is 51163325483. The reversal of 51163325459 is 95452336115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95452336115 = 5 ⋅19090467223.

It is a cyclic number.

It is not a de Polignac number, because 51163325459 - 2⁸ = 51163325203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51163925459) 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 in 3 ways as a sum of consecutive naturals, for example, 39784214 + ... + 39785499.

It is an arithmetic number, because the mean of its divisors is an integer number (12810723954).

Almost surely, 2^51163325459 is an apocalyptic number.

51163325459 is a deficient number, since it is larger than the sum of its proper divisors (79570357).

51163325459 is an equidigital number, since it uses as much as digits as its factorization.

51163325459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79570356.

The product of its digits is 486000, while the sum is 44.

The spelling of 51163325459 in words is "fifty-one billion, one hundred sixty-three million, three hundred twenty-five thousand, four hundred fifty-nine".