50172009187 has 2 divisors, whose sum is σ = 50172009188. Its totient is φ = 50172009186.

The previous prime is 50172009163. The next prime is 50172009299. The reversal of 50172009187 is 78190027105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50172009187 - 2¹⁵ = 50171976419 is a prime.

It is not a weakly prime, because it can be changed into another prime (50172009137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086004593 + 25086004594.

It is an arithmetic number, because the mean of its divisors is an integer number (25086004594).

Almost surely, 2^50172009187 is an apocalyptic number.

50172009187 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172009187 is an equidigital number, since it uses as much as digits as its factorization.

50172009187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 50172009187 in words is "fifty billion, one hundred seventy-two million, nine thousand, one hundred eighty-seven".