51488609800 has 24 divisors (see below), whose sum is σ = 119711018250. Its totient is φ = 20595443840.

The previous prime is 51488609797. The next prime is 51488609819. The reversal of 51488609800 is 890688415.

It can be written as a sum of positive squares in 3 ways, for example, as 50429888356 + 1058721444 = 224566^2 + 32538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128721325 + ... + 128721724.

Almost surely, 2^51488609800 is an apocalyptic number.

51488609800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51488609800 is an abundant number, since it is smaller than the sum of its proper divisors (68222408450).

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

51488609800 is a wasteful number, since it uses less digits than its factorization.

51488609800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257443065 (or 257443056 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 51488609800 in words is "fifty-one billion, four hundred eighty-eight million, six hundred nine thousand, eight hundred".