50917209129 has 6 divisors (see below), whose sum is σ = 73547079866. Its totient is φ = 33944806080.

The previous prime is 50917209107. The next prime is 50917209151. The reversal of 50917209129 is 92190271905.

50917209129 is a `hidden beast` number, since 509 + 17 + 2 + 0 + 9 + 129 = 666.

It is an interprime number because it is at equal distance from previous prime (50917209107) and next prime (50917209151).

It can be written as a sum of positive squares in only one way, i.e., 50917019904 + 189225 = 225648^2 + 435^2 .

It is not a de Polignac number, because 50917209129 - 2⁷ = 50917209001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50917209179) 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, 2828733832 + ... + 2828733849.

Almost surely, 2^50917209129 is an apocalyptic number.

It is an amenable number.

50917209129 is a deficient number, since it is larger than the sum of its proper divisors (22629870737).

50917209129 is a wasteful number, since it uses less digits than its factorization.

50917209129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657467687 (or 5657467684 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The spelling of 50917209129 in words is "fifty billion, nine hundred seventeen million, two hundred nine thousand, one hundred twenty-nine".