51409143959 has 4 divisors (see below), whose sum is σ = 51986774880. Its totient is φ = 50831513040.

The previous prime is 51409143953. The next prime is 51409144063. The reversal of 51409143959 is 95934190415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51409143959 - 2²⁰ = 51408095383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51409143953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288815327 + ... + 288815504.

It is an arithmetic number, because the mean of its divisors is an integer number (12996693720).

Almost surely, 2^51409143959 is an apocalyptic number.

51409143959 is a deficient number, since it is larger than the sum of its proper divisors (577630921).

51409143959 is an equidigital number, since it uses as much as digits as its factorization.

51409143959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577630920.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 51409143959 in words is "fifty-one billion, four hundred nine million, one hundred forty-three thousand, nine hundred fifty-nine".