50002278869 has 2 divisors, whose sum is σ = 50002278870. Its totient is φ = 50002278868.

The previous prime is 50002278811. The next prime is 50002278871. The reversal of 50002278869 is 96887220005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47835376369 + 2166902500 = 218713^2 + 46550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50002278869 is a prime.

It is a super-2 number, since 2×50002278869² (a number of 22 digits) contains 22 as substring.

Together with 50002278871, 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 (50002278569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25001139434 + 25001139435.

It is an arithmetic number, because the mean of its divisors is an integer number (25001139435).

Almost surely, 2^50002278869 is an apocalyptic number.

It is an amenable number.

50002278869 is a deficient number, since it is larger than the sum of its proper divisors (1).

50002278869 is an equidigital number, since it uses as much as digits as its factorization.

50002278869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 50002278869 in words is "fifty billion, two million, two hundred seventy-eight thousand, eight hundred sixty-nine".