51351155444444 has 36 divisors (see below), whose sum is σ = 90126833869800. Its totient is φ = 25600848315840.

The previous prime is 51351155444437. The next prime is 51351155444539. The reversal of 51351155444444 is 44444455115315.

It is a happy number.

51351155444444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51351155444392 and 51351155444401.

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 11 ways as a sum of consecutive naturals, for example, 3389731382 + ... + 3389746530.

It is an arithmetic number, because the mean of its divisors is an integer number (2503523163050).

Almost surely, 2^{51351155444444} is an apocalyptic number.

It is an amenable number.

51351155444444 is a deficient number, since it is larger than the sum of its proper divisors (38775678425356).

51351155444444 is a wasteful number, since it uses less digits than its factorization.

51351155444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21990 (or 21615 counting only the distinct ones).

The product of its digits is 7680000, while the sum is 50.

The spelling of 51351155444444 in words is "fifty-one trillion, three hundred fifty-one billion, one hundred fifty-five million, four hundred forty-four thousand, four hundred forty-four".