50111015081 has 2 divisors, whose sum is σ = 50111015082. Its totient is φ = 50111015080.

The previous prime is 50111015011. The next prime is 50111015099. The reversal of 50111015081 is 18051011105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31794099481 + 18316915600 = 178309^2 + 135340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50111015081 is a prime.

It is a super-2 number, since 2×50111015081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50111015011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055507540 + 25055507541.

It is an arithmetic number, because the mean of its divisors is an integer number (25055507541).

Almost surely, 2^50111015081 is an apocalyptic number.

It is an amenable number.

50111015081 is a deficient number, since it is larger than the sum of its proper divisors (1).

50111015081 is an equidigital number, since it uses as much as digits as its factorization.

50111015081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 23.

Adding to 50111015081 its reverse (18051011105), we get a palindrome (68162026186).

The spelling of 50111015081 in words is "fifty billion, one hundred eleven million, fifteen thousand, eighty-one".