51389942752 has 12 divisors (see below), whose sum is σ = 101173949856. Its totient is φ = 25694971360.

The previous prime is 51389942693. The next prime is 51389942767. The reversal of 51389942752 is 25724998315.

It is a junction number, because it is equal to n+sod(n) for n = 51389942693 and 51389942702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802967824 + ... + 802967887.

It is an arithmetic number, because the mean of its divisors is an integer number (8431162488).

Almost surely, 2^51389942752 is an apocalyptic number.

It is an amenable number.

51389942752 is a deficient number, since it is larger than the sum of its proper divisors (49784007104).

51389942752 is a wasteful number, since it uses less digits than its factorization.

51389942752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605935721 (or 1605935713 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The spelling of 51389942752 in words is "fifty-one billion, three hundred eighty-nine million, nine hundred forty-two thousand, seven hundred fifty-two".