50021745677 has 2 divisors, whose sum is σ = 50021745678. Its totient is φ = 50021745676.

The previous prime is 50021745611. The next prime is 50021745679. The reversal of 50021745677 is 77654712005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39688209961 + 10333535716 = 199219^2 + 101654^2 .

It is a cyclic number.

It is not a de Polignac number, because 50021745677 - 2²² = 50017551373 is a prime.

Together with 50021745679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50021745679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010872838 + 25010872839.

It is an arithmetic number, because the mean of its divisors is an integer number (25010872839).

Almost surely, 2^50021745677 is an apocalyptic number.

It is an amenable number.

50021745677 is a deficient number, since it is larger than the sum of its proper divisors (1).

50021745677 is an equidigital number, since it uses as much as digits as its factorization.

50021745677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 50021745677 in words is "fifty billion, twenty-one million, seven hundred forty-five thousand, six hundred seventy-seven".