51824873137 has 4 divisors (see below), whose sum is σ = 52534802980. Its totient is φ = 51114943296.

The previous prime is 51824873129. The next prime is 51824873143. The reversal of 51824873137 is 73137842815.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73137842815 = 5 ⋅14627568563.

It can be written as a sum of positive squares in 2 ways, for example, as 21451703296 + 30373169841 = 146464^2 + 174279^2 .

It is a cyclic number.

It is not a de Polignac number, because 51824873137 - 2³ = 51824873129 is a prime.

It is a super-2 number, since 2×51824873137² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51824873237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354964812 + ... + 354964957.

It is an arithmetic number, because the mean of its divisors is an integer number (13133700745).

Almost surely, 2^51824873137 is an apocalyptic number.

It is an amenable number.

51824873137 is a deficient number, since it is larger than the sum of its proper divisors (709929843).

51824873137 is an equidigital number, since it uses as much as digits as its factorization.

51824873137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709929842.

The product of its digits is 1128960, while the sum is 49.

The spelling of 51824873137 in words is "fifty-one billion, eight hundred twenty-four million, eight hundred seventy-three thousand, one hundred thirty-seven".