11873905401 has 4 divisors (see below), whose sum is σ = 15831873872. Its totient is φ = 7915936932.

The previous prime is 11873905367. The next prime is 11873905441. The reversal of 11873905401 is 10450937811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10450937811 = 3 ⋅3483645937.

It is not a de Polignac number, because 11873905401 - 2¹⁴ = 11873889017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11873905401.

It is not an unprimeable number, because it can be changed into a prime (11873905441) 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, 1978984231 + ... + 1978984236.

It is an arithmetic number, because the mean of its divisors is an integer number (3957968468).

Almost surely, 2^11873905401 is an apocalyptic number.

It is an amenable number.

11873905401 is a deficient number, since it is larger than the sum of its proper divisors (3957968471).

11873905401 is an equidigital number, since it uses as much as digits as its factorization.

11873905401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957968470.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 11873905401 in words is "eleven billion, eight hundred seventy-three million, nine hundred five thousand, four hundred one".