50616705421 has 2 divisors, whose sum is σ = 50616705422. Its totient is φ = 50616705420.

The previous prime is 50616705409. The next prime is 50616705509. The reversal of 50616705421 is 12450761605.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39446329321 + 11170376100 = 198611^2 + 105690^2 .

It is a cyclic number.

It is not a de Polignac number, because 50616705421 - 2⁹ = 50616704909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50616705121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25308352710 + 25308352711.

It is an arithmetic number, because the mean of its divisors is an integer number (25308352711).

Almost surely, 2^50616705421 is an apocalyptic number.

It is an amenable number.

50616705421 is a deficient number, since it is larger than the sum of its proper divisors (1).

50616705421 is an equidigital number, since it uses as much as digits as its factorization.

50616705421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 50616705421 in words is "fifty billion, six hundred sixteen million, seven hundred five thousand, four hundred twenty-one".