50821801663 has 8 divisors (see below), whose sum is σ = 52388197632. Its totient is φ = 49275617496.

The previous prime is 50821801661. The next prime is 50821801669. The reversal of 50821801663 is 36610812805.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50821801663 - 2¹ = 50821801661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50821801661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5047845 + ... + 5057902.

It is an arithmetic number, because the mean of its divisors is an integer number (6548524704).

Almost surely, 2^50821801663 is an apocalyptic number.

50821801663 is a deficient number, since it is larger than the sum of its proper divisors (1566395969).

50821801663 is a wasteful number, since it uses less digits than its factorization.

50821801663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105901.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 50821801663 in words is "fifty billion, eight hundred twenty-one million, eight hundred one thousand, six hundred sixty-three".