50605317081 has 60 divisors (see below), whose sum is σ = 83170233300. Its totient is φ = 30641276160.

The previous prime is 50605317019. The next prime is 50605317097. The reversal of 50605317081 is 18071350605.

50605317081 is a `hidden beast` number, since 50 + 6 + 0 + 531 + 70 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41591523600 + 9013793481 = 203940^2 + 94941^2 .

It is not a de Polignac number, because 50605317081 - 2⁶ = 50605317017 is a prime.

It is a super-2 number, since 2×50605317081² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50605317781) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 15768205 + ... + 15771413.

It is an arithmetic number, because the mean of its divisors is an integer number (1386170555).

Almost surely, 2^50605317081 is an apocalyptic number.

It is an amenable number.

50605317081 is a deficient number, since it is larger than the sum of its proper divisors (32564916219).

50605317081 is a wasteful number, since it uses less digits than its factorization.

50605317081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852 (or 4832 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

Adding to 50605317081 its reverse (18071350605), we get a palindrome (68676667686).

The spelling of 50605317081 in words is "fifty billion, six hundred five million, three hundred seventeen thousand, eighty-one".