50778205382189 has 2 divisors, whose sum is σ = 50778205382190. Its totient is φ = 50778205382188.

The previous prime is 50778205382111. The next prime is 50778205382269. The reversal of 50778205382189 is 98128350287705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35750139056164 + 15028066326025 = 5979142^2 + 3876605^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778205382189 - 2³² = 50773910414893 is a prime.

It is a super-2 number, since 2×50778205382189² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50778205382789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389102691094 + 25389102691095.

It is an arithmetic number, because the mean of its divisors is an integer number (25389102691095).

Almost surely, 2^{50778205382189} is an apocalyptic number.

It is an amenable number.

50778205382189 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778205382189 is an equidigital number, since it uses as much as digits as its factorization.

50778205382189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67737600, while the sum is 65.

The spelling of 50778205382189 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, three hundred eighty-two thousand, one hundred eighty-nine".