11678345019 has 96 divisors (see below), whose sum is σ = 19704572160. Its totient is φ = 6851433600.

The previous prime is 11678345011. The next prime is 11678345047. The reversal of 11678345019 is 91054387611.

11678345019 is a `hidden beast` number, since 1 + 1 + 67 + 83 + 4 + 501 + 9 = 666.

It is not a de Polignac number, because 11678345019 - 2³ = 11678345011 is a prime.

It is a super-2 number, since 2×11678345019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11678345011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10924017 + ... + 10925085.

It is an arithmetic number, because the mean of its divisors is an integer number (205255960).

Almost surely, 2^11678345019 is an apocalyptic number.

11678345019 is a deficient number, since it is larger than the sum of its proper divisors (8026227141).

11678345019 is a wasteful number, since it uses less digits than its factorization.

11678345019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 11678345019 in words is "eleven billion, six hundred seventy-eight million, three hundred forty-five thousand, nineteen".