51324046809 has 16 divisors (see below), whose sum is σ = 82808546688. Its totient is φ = 27602848512.

The previous prime is 51324046789. The next prime is 51324046847. The reversal of 51324046809 is 90864042315.

It is not a de Polignac number, because 51324046809 - 2⁷ = 51324046681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51324046889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71882062 + ... + 71882775.

It is an arithmetic number, because the mean of its divisors is an integer number (5175534168).

Almost surely, 2^51324046809 is an apocalyptic number.

It is an amenable number.

51324046809 is a deficient number, since it is larger than the sum of its proper divisors (31484499879).

51324046809 is a wasteful number, since it uses less digits than its factorization.

51324046809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143764864.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 51324046809 in words is "fifty-one billion, three hundred twenty-four million, forty-six thousand, eight hundred nine".