50921218800 has 180 divisors, whose sum is σ = 177279267984. Its totient is φ = 13535308800.

The previous prime is 50921218771. The next prime is 50921218801. The reversal of 50921218800 is 881212905.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50921218801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1104205 + ... + 1149395.

Almost surely, 2^50921218800 is an apocalyptic number.

50921218800 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 50921218800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88639633992).

50921218800 is an abundant number, since it is smaller than the sum of its proper divisors (126358049184).

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

50921218800 is a wasteful number, since it uses less digits than its factorization.

50921218800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45528 (or 45514 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 50921218800 in words is "fifty billion, nine hundred twenty-one million, two hundred eighteen thousand, eight hundred".