51900648848 has 40 divisors (see below), whose sum is σ = 106495828920. Its totient is φ = 24418519040.

The previous prime is 51900648823. The next prime is 51900648853. The reversal of 51900648848 is 84884600915.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36392429824 + 15508219024 = 190768^2 + 124532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51900648848.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1412858 + ... + 1449126.

It is an arithmetic number, because the mean of its divisors is an integer number (2662395723).

Almost surely, 2^51900648848 is an apocalyptic number.

It is an amenable number.

51900648848 is an abundant number, since it is smaller than the sum of its proper divisors (54595180072).

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

51900648848 is a wasteful number, since it uses less digits than its factorization.

51900648848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41555 (or 41549 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 51900648848 in words is "fifty-one billion, nine hundred million, six hundred forty-eight thousand, eight hundred forty-eight".