50050111661 has 16 divisors (see below), whose sum is σ = 56380356096. Its totient is φ = 44017560000.

The previous prime is 50050111567. The next prime is 50050111669. The reversal of 50050111661 is 16611105005.

50050111661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50050111661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50050111661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50050111669) 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, 1061651 + ... + 1107791.

It is an arithmetic number, because the mean of its divisors is an integer number (3523772256).

Almost surely, 2^50050111661 is an apocalyptic number.

It is an amenable number.

50050111661 is a deficient number, since it is larger than the sum of its proper divisors (6330244435).

50050111661 is a wasteful number, since it uses less digits than its factorization.

50050111661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49364.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 50050111661 its reverse (16611105005), we get a palindrome (66661216666).

The spelling of 50050111661 in words is "fifty billion, fifty million, one hundred eleven thousand, six hundred sixty-one".