51827695918 has 16 divisors (see below), whose sum is σ = 78643295280. Its totient is φ = 25613473600.

The previous prime is 51827695891. The next prime is 51827695921. The reversal of 51827695918 is 81959672815.

It is a super-2 number, since 2×51827695918² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458373 + ... + 560143.

It is an arithmetic number, because the mean of its divisors is an integer number (4915205955).

Almost surely, 2^51827695918 is an apocalyptic number.

51827695918 is a deficient number, since it is larger than the sum of its proper divisors (26815599362).

51827695918 is a wasteful number, since it uses less digits than its factorization.

51827695918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104723.

The product of its digits is 10886400, while the sum is 61.

The spelling of 51827695918 in words is "fifty-one billion, eight hundred twenty-seven million, six hundred ninety-five thousand, nine hundred eighteen".