50610165121 has 4 divisors (see below), whose sum is σ = 50620479700. Its totient is φ = 50599850544.

The previous prime is 50610165113. The next prime is 50610165139. The reversal of 50610165121 is 12156101605.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12156101605 = 5 ⋅2431220321.

It can be written as a sum of positive squares in 2 ways, for example, as 25222204225 + 25387960896 = 158815^2 + 159336^2 .

It is a cyclic number.

It is not a de Polignac number, because 50610165121 - 2³ = 50610165113 is a prime.

It is a super-2 number, since 2×50610165121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50610165121.

It is not an unprimeable number, because it can be changed into a prime (50610165191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5149926 + ... + 5159743.

It is an arithmetic number, because the mean of its divisors is an integer number (12655119925).

Almost surely, 2^50610165121 is an apocalyptic number.

It is an amenable number.

50610165121 is a deficient number, since it is larger than the sum of its proper divisors (10314579).

50610165121 is a wasteful number, since it uses less digits than its factorization.

50610165121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10314578.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 50610165121 its reverse (12156101605), we get a palindrome (62766266726).

The spelling of 50610165121 in words is "fifty billion, six hundred ten million, one hundred sixty-five thousand, one hundred twenty-one".