51444214040 has 32 divisors (see below), whose sum is σ = 115894784880. Its totient is φ = 20551853952.

The previous prime is 51444214013. The next prime is 51444214043. The reversal of 51444214040 is 4041244415.

It is a junction number, because it is equal to n+sod(n) for n = 51444213994 and 51444214012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444214043) 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 7 ways as a sum of consecutive naturals, for example, 774962 + ... + 838721.

Almost surely, 2^51444214040 is an apocalyptic number.

It is an amenable number.

51444214040 is an abundant number, since it is smaller than the sum of its proper divisors (64450570840).

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

51444214040 is a wasteful number, since it uses less digits than its factorization.

51444214040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614491 (or 1614487 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 51444214040 its reverse (4041244415), we get a palindrome (55485458455).

The spelling of 51444214040 in words is "fifty-one billion, four hundred forty-four million, two hundred fourteen thousand, forty".