51855848244 has 48 divisors (see below), whose sum is σ = 138074641600. Its totient is φ = 16818111648.

The previous prime is 51855848201. The next prime is 51855848299. The reversal of 51855848244 is 44284855815.

It is a happy number.

51855848244 is a `hidden beast` number, since 5 + 1 + 8 + 558 + 4 + 82 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6484474 + ... + 6492465.

Almost surely, 2^51855848244 is an apocalyptic number.

51855848244 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51855848244 is an abundant number, since it is smaller than the sum of its proper divisors (86218793356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51855848244 is a wasteful number, since it uses less digits than its factorization.

51855848244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12976989 (or 12976981 counting only the distinct ones).

The product of its digits is 8192000, while the sum is 54.

The spelling of 51855848244 in words is "fifty-one billion, eight hundred fifty-five million, eight hundred forty-eight thousand, two hundred forty-four".