50687168869 has 2 divisors, whose sum is σ = 50687168870. Its totient is φ = 50687168868.

The previous prime is 50687168759. The next prime is 50687168893. The reversal of 50687168869 is 96886178605.

50687168869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42211757025 + 8475411844 = 205455^2 + 92062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50687168869 is a prime.

It is a super-2 number, since 2×50687168869² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50687168869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50687168899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25343584434 + 25343584435.

It is an arithmetic number, because the mean of its divisors is an integer number (25343584435).

Almost surely, 2^50687168869 is an apocalyptic number.

It is an amenable number.

50687168869 is a deficient number, since it is larger than the sum of its proper divisors (1).

50687168869 is an equidigital number, since it uses as much as digits as its factorization.

50687168869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 50687168869 in words is "fifty billion, six hundred eighty-seven million, one hundred sixty-eight thousand, eight hundred sixty-nine".