50516789129 has 8 divisors (see below), whose sum is σ = 51485012040. Its totient is φ = 49557744000.

The previous prime is 50516789117. The next prime is 50516789131. The reversal of 50516789129 is 92198761505.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10657465225 + 39859323904 = 103235^2 + 199648^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50516789129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50516789189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283332 + ... + 2305349.

It is an arithmetic number, because the mean of its divisors is an integer number (6435626505).

Almost surely, 2^50516789129 is an apocalyptic number.

It is an amenable number.

50516789129 is a deficient number, since it is larger than the sum of its proper divisors (968222911).

50516789129 is a wasteful number, since it uses less digits than its factorization.

50516789129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588891.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 50516789129 in words is "fifty billion, five hundred sixteen million, seven hundred eighty-nine thousand, one hundred twenty-nine".