49945164193 has 2 divisors, whose sum is σ = 49945164194. Its totient is φ = 49945164192.

The previous prime is 49945164187. The next prime is 49945164209. The reversal of 49945164193 is 39146154994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42729850944 + 7215313249 = 206712^2 + 84943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49945164193 is a prime.

It is not a weakly prime, because it can be changed into another prime (49945164173) 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, 24972582096 + 24972582097.

It is an arithmetic number, because the mean of its divisors is an integer number (24972582097).

Almost surely, 2^49945164193 is an apocalyptic number.

It is an amenable number.

49945164193 is a deficient number, since it is larger than the sum of its proper divisors (1).

49945164193 is an equidigital number, since it uses as much as digits as its factorization.

49945164193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 55.

The spelling of 49945164193 in words is "forty-nine billion, nine hundred forty-five million, one hundred sixty-four thousand, one hundred ninety-three".