50017642621 has 2 divisors, whose sum is σ = 50017642622. Its totient is φ = 50017642620.

The previous prime is 50017642583. The next prime is 50017642667. The reversal of 50017642621 is 12624671005.

50017642621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30609252025 + 19408390596 = 174955^2 + 139314^2 .

It is a cyclic number.

It is not a de Polignac number, because 50017642621 - 2⁹ = 50017642109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50017646621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25008821310 + 25008821311.

It is an arithmetic number, because the mean of its divisors is an integer number (25008821311).

Almost surely, 2^50017642621 is an apocalyptic number.

It is an amenable number.

50017642621 is a deficient number, since it is larger than the sum of its proper divisors (1).

50017642621 is an equidigital number, since it uses as much as digits as its factorization.

50017642621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 50017642621 in words is "fifty billion, seventeen million, six hundred forty-two thousand, six hundred twenty-one".