51636223600 has 240 divisors, whose sum is σ = 140192402112. Its totient is φ = 18134138880.

The previous prime is 51636223547. The next prime is 51636223627. The reversal of 51636223600 is 632263615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23081682 + ... + 23083918.

Almost surely, 2^51636223600 is an apocalyptic number.

51636223600 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 51636223600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70096201056).

51636223600 is an abundant number, since it is smaller than the sum of its proper divisors (88556178512).

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

51636223600 is a wasteful number, since it uses less digits than its factorization.

51636223600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 51636223600 in words is "fifty-one billion, six hundred thirty-six million, two hundred twenty-three thousand, six hundred".