51500487600 has 180 divisors, whose sum is σ = 179054573256. Its totient is φ = 13707832320.

The previous prime is 51500487569. The next prime is 51500487641. The reversal of 51500487600 is 678400515.

51500487600 is a `hidden beast` number, since 5 + 1 + 5 + 0 + 0 + 48 + 7 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1956124 + ... + 1982276.

Almost surely, 2^51500487600 is an apocalyptic number.

51500487600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51500487600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89527286628).

51500487600 is an abundant number, since it is smaller than the sum of its proper divisors (127554085656).

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

51500487600 is a wasteful number, since it uses less digits than its factorization.

51500487600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26724 (or 26710 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 51500487600 in words is "fifty-one billion, five hundred million, four hundred eighty-seven thousand, six hundred".