51827695919 has 8 divisors (see below), whose sum is σ = 52157118240. Its totient is φ = 51499302400.

The previous prime is 51827695891. The next prime is 51827695921. The reversal of 51827695919 is 91959672815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51827695919 - 2²⁸ = 51559260463 is a prime.

It is a super-2 number, since 2×51827695919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51827695939) 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 7 ways as a sum of consecutive naturals, for example, 156002 + ... + 357759.

It is an arithmetic number, because the mean of its divisors is an integer number (6519639780).

Almost surely, 2^51827695919 is an apocalyptic number.

51827695919 is a deficient number, since it is larger than the sum of its proper divisors (329422321).

51827695919 is a wasteful number, since it uses less digits than its factorization.

51827695919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514401.

The product of its digits is 12247200, while the sum is 62.

The spelling of 51827695919 in words is "fifty-one billion, eight hundred twenty-seven million, six hundred ninety-five thousand, nine hundred nineteen".