50195289680689 has 2 divisors, whose sum is σ = 50195289680690. Its totient is φ = 50195289680688.

The previous prime is 50195289680531. The next prime is 50195289680707. The reversal of 50195289680689 is 98608698259105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47720671240225 + 2474618440464 = 6908015^2 + 1573092^2 .

It is a cyclic number.

It is not a de Polignac number, because 50195289680689 - 2²¹ = 50195287583537 is a prime.

It is a super-2 number, since 2×50195289680689² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50195289680089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25097644840344 + 25097644840345.

It is an arithmetic number, because the mean of its divisors is an integer number (25097644840345).

Almost surely, 2^{50195289680689} is an apocalyptic number.

It is an amenable number.

50195289680689 is a deficient number, since it is larger than the sum of its proper divisors (1).

50195289680689 is an equidigital number, since it uses as much as digits as its factorization.

50195289680689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 671846400, while the sum is 76.

The spelling of 50195289680689 in words is "fifty trillion, one hundred ninety-five billion, two hundred eighty-nine million, six hundred eighty thousand, six hundred eighty-nine".