11788378011 has 10 divisors (see below), whose sum is σ = 17609799372. Its totient is φ = 7858918620.

The previous prime is 11788377989. The next prime is 11788378027. The reversal of 11788378011 is 11087388711.

It is not a de Polignac number, because 11788378011 - 2¹⁰ = 11788376987 is a prime.

It is a super-2 number, since 2×11788378011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11788378211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72767685 + ... + 72767846.

Almost surely, 2^11788378011 is an apocalyptic number.

11788378011 is a deficient number, since it is larger than the sum of its proper divisors (5821421361).

11788378011 is an equidigital number, since it uses as much as digits as its factorization.

11788378011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145535543 (or 145535534 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 45.

The spelling of 11788378011 in words is "eleven billion, seven hundred eighty-eight million, three hundred seventy-eight thousand, eleven".