50111009917 has 2 divisors, whose sum is σ = 50111009918. Its totient is φ = 50111009916.

The previous prime is 50111009869. The next prime is 50111009951. The reversal of 50111009917 is 71990011105.

It is an a-pointer prime, because the next prime (50111009951) can be obtained adding 50111009917 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37613111481 + 12497898436 = 193941^2 + 111794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50111009917 is a prime.

It is a super-2 number, since 2×50111009917² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50111009017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055504958 + 25055504959.

It is an arithmetic number, because the mean of its divisors is an integer number (25055504959).

Almost surely, 2^50111009917 is an apocalyptic number.

It is an amenable number.

50111009917 is a deficient number, since it is larger than the sum of its proper divisors (1).

50111009917 is an equidigital number, since it uses as much as digits as its factorization.

50111009917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 34.

The spelling of 50111009917 in words is "fifty billion, one hundred eleven million, nine thousand, nine hundred seventeen".