50145115121 has 6 divisors (see below), whose sum is σ = 51234735090. Its totient is φ = 49078195616.

The previous prime is 50145115103. The next prime is 50145115159. The reversal of 50145115121 is 12151154105.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46336867600 + 3808247521 = 215260^2 + 61711^2 .

It is not a de Polignac number, because 50145115121 - 2²⁶ = 50078006257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50145115421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11347976 + ... + 11352393.

It is an arithmetic number, because the mean of its divisors is an integer number (8539122515).

Almost surely, 2^50145115121 is an apocalyptic number.

It is an amenable number.

50145115121 is a deficient number, since it is larger than the sum of its proper divisors (1089619969).

50145115121 is an equidigital number, since it uses as much as digits as its factorization.

50145115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22700463 (or 22700416 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 50145115121 its reverse (12151154105), we get a palindrome (62296269226).

The spelling of 50145115121 in words is "fifty billion, one hundred forty-five million, one hundred fifteen thousand, one hundred twenty-one".