50161656500091 has 32 divisors (see below), whose sum is σ = 74437880394240. Its totient is φ = 33385171831200.

The previous prime is 50161656500071. The next prime is 50161656500093. The reversal of 50161656500091 is 19000565616105.

50161656500091 is a `hidden beast` number, since 5 + 0 + 1 + 6 + 1 + 6 + 56 + 500 + 0 + 91 = 666.

It is not a de Polignac number, because 50161656500091 - 2⁶ = 50161656500027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50161656500093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203008681 + ... + 203255621.

It is an arithmetic number, because the mean of its divisors is an integer number (2326183762320).

Almost surely, 2^{50161656500091} is an apocalyptic number.

50161656500091 is a deficient number, since it is larger than the sum of its proper divisors (24276223894149).

50161656500091 is a wasteful number, since it uses less digits than its factorization.

50161656500091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259504 (or 259498 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 50161656500091 in words is "fifty trillion, one hundred sixty-one billion, six hundred fifty-six million, five hundred thousand, ninety-one".