50640830666 has 16 divisors (see below), whose sum is σ = 76089395304. Its totient is φ = 25277724864.

The previous prime is 50640830659. The next prime is 50640830671. The reversal of 50640830666 is 66603804605.

50640830666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47795141641 + 2845689025 = 218621^2 + 53345^2 .

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, 6253316 + ... + 6261408.

Almost surely, 2^50640830666 is an apocalyptic number.

50640830666 is a deficient number, since it is larger than the sum of its proper divisors (25448564638).

50640830666 is a wasteful number, since it uses less digits than its factorization.

50640830666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12985.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 50640830666 in words is "fifty billion, six hundred forty million, eight hundred thirty thousand, six hundred sixty-six".