51435064444 has 12 divisors (see below), whose sum is σ = 90021771000. Its totient is φ = 25714558448.

The previous prime is 51435064411. The next prime is 51435064451. The reversal of 51435064444 is 44446053415.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51435064397 and 51435064406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704299 + ... + 773890.

It is an arithmetic number, because the mean of its divisors is an integer number (7501814250).

Almost surely, 2^51435064444 is an apocalyptic number.

It is an amenable number.

51435064444 is a deficient number, since it is larger than the sum of its proper divisors (38586706556).

51435064444 is a wasteful number, since it uses less digits than its factorization.

51435064444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486892 (or 1486890 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 51435064444 in words is "fifty-one billion, four hundred thirty-five million, sixty-four thousand, four hundred forty-four".