50517816621 has 32 divisors (see below), whose sum is σ = 68698844160. Its totient is φ = 33013132416.

The previous prime is 50517816599. The next prime is 50517816631. The reversal of 50517816621 is 12661871505.

50517816621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50517816621 - 2¹¹ = 50517814573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50517816631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55697250 + ... + 55698156.

It is an arithmetic number, because the mean of its divisors is an integer number (2146838880).

Almost surely, 2^50517816621 is an apocalyptic number.

It is an amenable number.

50517816621 is a deficient number, since it is larger than the sum of its proper divisors (18181027539).

50517816621 is a wasteful number, since it uses less digits than its factorization.

50517816621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 50517816621 in words is "fifty billion, five hundred seventeen million, eight hundred sixteen thousand, six hundred twenty-one".