11808386142 has 64 divisors (see below), whose sum is σ = 28333670400. Its totient is φ = 3209631840.

The previous prime is 11808386071. The next prime is 11808386203. The reversal of 11808386142 is 24168380811.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 11808386094 and 11808386103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42 + ... + 153677.

It is an arithmetic number, because the mean of its divisors is an integer number (442713600).

Almost surely, 2^11808386142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11808386142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14166835200).

11808386142 is an abundant number, since it is smaller than the sum of its proper divisors (16525284258).

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

11808386142 is a wasteful number, since it uses less digits than its factorization.

11808386142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153821.

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 11808386142 in words is "eleven billion, eight hundred eight million, three hundred eighty-six thousand, one hundred forty-two".