18071336052 has 144 divisors (see below), whose sum is σ = 57028188672. Its totient is φ = 4687583040.

The previous prime is 18071336009. The next prime is 18071336099. The reversal of 18071336052 is 25063317081.

18071336052 is a `hidden beast` number, since 18 + 0 + 7 + 1 + 33 + 605 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18071335998 and 18071336016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2288503 + ... + 2296385.

It is an arithmetic number, because the mean of its divisors is an integer number (396029088).

Almost surely, 2^18071336052 is an apocalyptic number.

18071336052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18071336052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28514094336).

18071336052 is an abundant number, since it is smaller than the sum of its proper divisors (38956852620).

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

18071336052 is a wasteful number, since it uses less digits than its factorization.

18071336052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738 (or 8733 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 18071336052 in words is "eighteen billion, seventy-one million, three hundred thirty-six thousand, fifty-two".