11378803511 has 4 divisors (see below), whose sum is σ = 12048144912. Its totient is φ = 10709462112.

The previous prime is 11378803463. The next prime is 11378803517. The reversal of 11378803511 is 11530887311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11378803511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11378803517) 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, 334670675 + ... + 334670708.

It is an arithmetic number, because the mean of its divisors is an integer number (3012036228).

Almost surely, 2^11378803511 is an apocalyptic number.

11378803511 is a deficient number, since it is larger than the sum of its proper divisors (669341401).

11378803511 is an equidigital number, since it uses as much as digits as its factorization.

11378803511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669341400.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 11378803511 in words is "eleven billion, three hundred seventy-eight million, eight hundred three thousand, five hundred eleven".