103965994393 has 4 divisors (see below), whose sum is σ = 110081641140. Its totient is φ = 97850347648.

The previous prime is 103965994373. The next prime is 103965994397. The reversal of 103965994393 is 393499569301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393499569301 = 271 ⋅1452027931.

It can be written as a sum of positive squares in 2 ways, for example, as 64855790224 + 39110204169 = 254668^2 + 197763^2 .

It is a cyclic number.

It is not a de Polignac number, because 103965994393 - 2²¹ = 103963897241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103965994397) 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 in 3 ways as a sum of consecutive naturals, for example, 3057823348 + ... + 3057823381.

It is an arithmetic number, because the mean of its divisors is an integer number (27520410285).

Almost surely, 2^103965994393 is an apocalyptic number.

It is an amenable number.

103965994393 is a deficient number, since it is larger than the sum of its proper divisors (6115646747).

103965994393 is an equidigital number, since it uses as much as digits as its factorization.

103965994393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115646746.

The product of its (nonzero) digits is 21257640, while the sum is 61.

The spelling of 103965994393 in words is "one hundred three billion, nine hundred sixty-five million, nine hundred ninety-four thousand, three hundred ninety-three".