11808474678 has 576 divisors, whose sum is σ = 38091755520. Its totient is φ = 2645395200.

The previous prime is 11808474637. The next prime is 11808474719. The reversal of 11808474678 is 87647480811.

It is an interprime number because it is at equal distance from previous prime (11808474637) and next prime (11808474719).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 380918523 + ... + 380918553.

It is an arithmetic number, because the mean of its divisors is an integer number (66131520).

Almost surely, 2^11808474678 is an apocalyptic number.

11808474678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11808474678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19045877760).

11808474678 is an abundant number, since it is smaller than the sum of its proper divisors (26283280842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11808474678 is a wasteful number, since it uses less digits than its factorization.

11808474678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 11808474678 in words is "eleven billion, eight hundred eight million, four hundred seventy-four thousand, six hundred seventy-eight".