11478887411 has 4 divisors (see below), whose sum is σ = 12083039400. Its totient is φ = 10874735424.

The previous prime is 11478887323. The next prime is 11478887419.

It is a happy number.

11478887411 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11478887411 - 2²² = 11474693107 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 11478887411.

It is not an unprimeable number, because it can be changed into a prime (11478887419) 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, 302075966 + ... + 302076003.

It is an arithmetic number, because the mean of its divisors is an integer number (3020759850).

Almost surely, 2^11478887411 is an apocalyptic number.

11478887411 is a deficient number, since it is larger than the sum of its proper divisors (604151989).

11478887411 is an equidigital number, since it uses as much as digits as its factorization.

11478887411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604151988.

The product of its digits is 401408, while the sum is 50.

The spelling of 11478887411 in words is "eleven billion, four hundred seventy-eight million, eight hundred eighty-seven thousand, four hundred eleven".