51444220014 has 64 divisors (see below), whose sum is σ = 130135610880. Its totient is φ = 14911364160.

The previous prime is 51444220007. The next prime is 51444220019. The reversal of 51444220014 is 41002244415.

51444220014 is a `hidden beast` number, since 5 + 1 + 4 + 442 + 200 + 14 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 51444220014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444220019) 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 31 ways as a sum of consecutive naturals, for example, 1869087 + ... + 1896410.

It is an arithmetic number, because the mean of its divisors is an integer number (2033368920).

Almost surely, 2^51444220014 is an apocalyptic number.

51444220014 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51444220014 is an abundant number, since it is smaller than the sum of its proper divisors (78691390866).

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

51444220014 is a wasteful number, since it uses less digits than its factorization.

51444220014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765542 (or 3765536 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 51444220014 its reverse (41002244415), we get a palindrome (92446464429).

The spelling of 51444220014 in words is "fifty-one billion, four hundred forty-four million, two hundred twenty thousand, fourteen".