50105110661 has 4 divisors (see below), whose sum is σ = 50108783532. Its totient is φ = 50101437792.

The previous prime is 50105110631. The next prime is 50105110687. The reversal of 50105110661 is 16601150105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44375529025 + 5729581636 = 210655^2 + 75694^2 .

It is a cyclic number.

It is not a de Polignac number, because 50105110661 - 2¹⁸ = 50104848517 is a prime.

It is a super-2 number, since 2×50105110661² (a number of 22 digits) contains 22 as substring.

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 50105110661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50105110631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815896 + ... + 1843281.

It is an arithmetic number, because the mean of its divisors is an integer number (12527195883).

Almost surely, 2^50105110661 is an apocalyptic number.

It is an amenable number.

50105110661 is a deficient number, since it is larger than the sum of its proper divisors (3672871).

50105110661 is a wasteful number, since it uses less digits than its factorization.

50105110661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672870.

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

Adding to 50105110661 its reverse (16601150105), we get a palindrome (66706260766).

The spelling of 50105110661 in words is "fifty billion, one hundred five million, one hundred ten thousand, six hundred sixty-one".