51144885486 has 32 divisors (see below), whose sum is σ = 113668934400. Its totient is φ = 17046250200.

The previous prime is 51144885481. The next prime is 51144885503. The reversal of 51144885486 is 68458844115.

51144885486 is a `hidden beast` number, since 5 + 1 + 14 + 4 + 88 + 548 + 6 = 666.

It is a super-2 number, since 2×51144885486² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144885481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436911 + ... + 541461.

It is an arithmetic number, because the mean of its divisors is an integer number (3552154200).

Almost surely, 2^51144885486 is an apocalyptic number.

51144885486 is an abundant number, since it is smaller than the sum of its proper divisors (62524048914).

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

51144885486 is a wasteful number, since it uses less digits than its factorization.

51144885486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113621 (or 113615 counting only the distinct ones).

The product of its digits is 4915200, while the sum is 54.

The spelling of 51144885486 in words is "fifty-one billion, one hundred forty-four million, eight hundred eighty-five thousand, four hundred eighty-six".