50636337221 has 2 divisors, whose sum is σ = 50636337222. Its totient is φ = 50636337220.

The previous prime is 50636337179. The next prime is 50636337281. The reversal of 50636337221 is 12273363605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46580430625 + 4055906596 = 215825^2 + 63686^2 .

It is a cyclic number.

It is not a de Polignac number, because 50636337221 - 2¹⁴ = 50636320837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50636337281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25318168610 + 25318168611.

It is an arithmetic number, because the mean of its divisors is an integer number (25318168611).

Almost surely, 2^50636337221 is an apocalyptic number.

It is an amenable number.

50636337221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50636337221 is an equidigital number, since it uses as much as digits as its factorization.

50636337221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 50636337221 in words is "fifty billion, six hundred thirty-six million, three hundred thirty-seven thousand, two hundred twenty-one".