51442013430 has 48 divisors (see below), whose sum is σ = 141616841184. Its totient is φ = 12910936320.

The previous prime is 51442013423. The next prime is 51442013443. The reversal of 51442013430 is 3431024415.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51442013394 and 51442013403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16809586 + ... + 16812645.

It is an arithmetic number, because the mean of its divisors is an integer number (2950350858).

Almost surely, 2^51442013430 is an apocalyptic number.

51442013430 is an abundant number, since it is smaller than the sum of its proper divisors (90174827754).

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

51442013430 is a wasteful number, since it uses less digits than its factorization.

51442013430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33622261 (or 33622258 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 51442013430 its reverse (3431024415), we get a palindrome (54873037845).

The spelling of 51442013430 in words is "fifty-one billion, four hundred forty-two million, thirteen thousand, four hundred thirty".