50166605661 has 16 divisors (see below), whose sum is σ = 67471509504. Its totient is φ = 33153490944.

The previous prime is 50166605653. The next prime is 50166605717. The reversal of 50166605661 is 16650666105.

It is not a de Polignac number, because 50166605661 - 2³ = 50166605653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50166605561) 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, 409581 + ... + 517773.

It is an arithmetic number, because the mean of its divisors is an integer number (4216969344).

Almost surely, 2^50166605661 is an apocalyptic number.

It is an amenable number.

50166605661 is a deficient number, since it is larger than the sum of its proper divisors (17304903843).

50166605661 is a wasteful number, since it uses less digits than its factorization.

50166605661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109540.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 50166605661 in words is "fifty billion, one hundred sixty-six million, six hundred five thousand, six hundred sixty-one".