51855585327 has 144 divisors (see below), whose sum is σ = 100732569600. Its totient is φ = 25073867520.

The previous prime is 51855585323. The next prime is 51855585349. The reversal of 51855585327 is 72358555815.

51855585327 is a `hidden beast` number, since 5 + 1 + 8 + 55 + 58 + 532 + 7 = 666.

It is not a de Polignac number, because 51855585327 - 2² = 51855585323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51855585323) 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 143 ways as a sum of consecutive naturals, for example, 6266949 + ... + 6275217.

Almost surely, 2^51855585327 is an apocalyptic number.

51855585327 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51855585327 is a deficient number, since it is larger than the sum of its proper divisors (48876984273).

51855585327 is a wasteful number, since it uses less digits than its factorization.

51855585327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8358 (or 8342 counting only the distinct ones).

The product of its digits is 8400000, while the sum is 54.

The spelling of 51855585327 in words is "fifty-one billion, eight hundred fifty-five million, five hundred eighty-five thousand, three hundred twenty-seven".