50665611566 has 16 divisors (see below), whose sum is σ = 78806725200. Its totient is φ = 24400873728.

The previous prime is 50665611553. The next prime is 50665611583. The reversal of 50665611566 is 66511656605.

It is a self number, because there is not a number n which added to its sum of digits gives 50665611566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018115 + ... + 1066718.

It is an arithmetic number, because the mean of its divisors is an integer number (4925420325).

Almost surely, 2^50665611566 is an apocalyptic number.

50665611566 is a deficient number, since it is larger than the sum of its proper divisors (28141113634).

50665611566 is a wasteful number, since it uses less digits than its factorization.

50665611566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085283.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 50665611566 in words is "fifty billion, six hundred sixty-five million, six hundred eleven thousand, five hundred sixty-six".