50665897839 has 16 divisors (see below), whose sum is σ = 68330844000. Its totient is φ = 33389300736.

The previous prime is 50665897817. The next prime is 50665897879. The reversal of 50665897839 is 93879856605.

It is not a de Polignac number, because 50665897839 - 2¹⁵ = 50665865071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50665897839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50665897879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139367 + ... + 1182999.

It is an arithmetic number, because the mean of its divisors is an integer number (4270677750).

Almost surely, 2^50665897839 is an apocalyptic number.

50665897839 is a deficient number, since it is larger than the sum of its proper divisors (17664946161).

50665897839 is a wasteful number, since it uses less digits than its factorization.

50665897839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48074.

The product of its (nonzero) digits is 97977600, while the sum is 66.

The spelling of 50665897839 in words is "fifty billion, six hundred sixty-five million, eight hundred ninety-seven thousand, eight hundred thirty-nine".