11287380873 has 4 divisors (see below), whose sum is σ = 15049841168. Its totient is φ = 7524920580.

The previous prime is 11287380851. The next prime is 11287380959. The reversal of 11287380873 is 37808378211.

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.

It is not a de Polignac number, because 11287380873 - 2¹⁸ = 11287118729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11287380803) 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, 1881230143 + ... + 1881230148.

It is an arithmetic number, because the mean of its divisors is an integer number (3762460292).

Almost surely, 2^11287380873 is an apocalyptic number.

It is an amenable number.

11287380873 is a deficient number, since it is larger than the sum of its proper divisors (3762460295).

11287380873 is an equidigital number, since it uses as much as digits as its factorization.

11287380873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762460294.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 11287380873 in words is "eleven billion, two hundred eighty-seven million, three hundred eighty thousand, eight hundred seventy-three".