51352565644 has 12 divisors (see below), whose sum is σ = 90756762768. Its totient is φ = 25422062000.

The previous prime is 51352565633. The next prime is 51352565651. The reversal of 51352565644 is 44656525315.

It is a junction number, because it is equal to n+sod(n) for n = 51352565594 and 51352565603.

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 3 ways as a sum of consecutive naturals, for example, 63554752 + ... + 63555559.

It is an arithmetic number, because the mean of its divisors is an integer number (7563063564).

Almost surely, 2^51352565644 is an apocalyptic number.

It is an amenable number.

51352565644 is a deficient number, since it is larger than the sum of its proper divisors (39404197124).

51352565644 is a wasteful number, since it uses less digits than its factorization.

51352565644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127110416 (or 127110414 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 46.

The spelling of 51352565644 in words is "fifty-one billion, three hundred fifty-two million, five hundred sixty-five thousand, six hundred forty-four".