50278906665 has 192 divisors, whose sum is σ = 104070500352. Its totient is φ = 22217932800.

The previous prime is 50278906651. The next prime is 50278906669. The reversal of 50278906665 is 56660987205.

It is a happy number.

It is not a de Polignac number, because 50278906665 - 2⁴ = 50278906649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50278906669) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 21887797 + ... + 21890093.

It is an arithmetic number, because the mean of its divisors is an integer number (542033856).

Almost surely, 2^50278906665 is an apocalyptic number.

It is an amenable number.

50278906665 is an abundant number, since it is smaller than the sum of its proper divisors (53791593687).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50278906665 is a wasteful number, since it uses less digits than its factorization.

50278906665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 50278906665 in words is "fifty billion, two hundred seventy-eight million, nine hundred six thousand, six hundred sixty-five".