50665819680 has 768 divisors, whose sum is σ = 213663744000. Its totient is φ = 11197025280.

The previous prime is 50665819669. The next prime is 50665819727. The reversal of 50665819680 is 8691856605.

It is a happy number.

50665819680 is a `hidden beast` number, since 50 + 6 + 6 + 581 + 9 + 6 + 8 + 0 = 666.

50665819680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 45934009 + ... + 45935111.

It is an arithmetic number, because the mean of its divisors is an integer number (278208000).

Almost surely, 2^50665819680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50665819680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106831872000).

50665819680 is an abundant number, since it is smaller than the sum of its proper divisors (162997924320).

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

50665819680 is a wasteful number, since it uses less digits than its factorization.

50665819680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 50665819680 in words is "fifty billion, six hundred sixty-five million, eight hundred nineteen thousand, six hundred eighty".