5091145961896 has 16 divisors (see below), whose sum is σ = 9547222216500. Its totient is φ = 2545220037504.

The previous prime is 5091145961851. The next prime is 5091145961897. The reversal of 5091145961896 is 6981695411905.

It can be written as a sum of positive squares in 2 ways, for example, as 3925890480996 + 1165255480900 = 1981386^2 + 1079470^2 .

It is not an unprimeable number, because it can be changed into a prime (5091145961897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44056621 + ... + 44172028.

Almost surely, 2^{5091145961896} is an apocalyptic number.

It is an amenable number.

5091145961896 is a deficient number, since it is larger than the sum of its proper divisors (4456076254604).

5091145961896 is a wasteful number, since it uses less digits than its factorization.

5091145961896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88235868 (or 88235864 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 64.

The spelling of 5091145961896 in words is "five trillion, ninety-one billion, one hundred forty-five million, nine hundred sixty-one thousand, eight hundred ninety-six".