50172016159891 has 2 divisors, whose sum is σ = 50172016159892. Its totient is φ = 50172016159890.

The previous prime is 50172016159877. The next prime is 50172016159943. The reversal of 50172016159891 is 19895161027105.

50172016159891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50172016159891 - 2⁴¹ = 47972992904339 is a prime.

It is not a weakly prime, because it can be changed into another prime (50172016154891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25086008079945 + 25086008079946.

It is an arithmetic number, because the mean of its divisors is an integer number (25086008079946).

Almost surely, 2^{50172016159891} is an apocalyptic number.

50172016159891 is a deficient number, since it is larger than the sum of its proper divisors (1).

50172016159891 is an equidigital number, since it uses as much as digits as its factorization.

50172016159891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 55.

The spelling of 50172016159891 in words is "fifty trillion, one hundred seventy-two billion, sixteen million, one hundred fifty-nine thousand, eight hundred ninety-one".