38660216418 has 48 divisors (see below), whose sum is σ = 86227929216. Its totient is φ = 12509264160.

The previous prime is 38660216401. The next prime is 38660216423. The reversal of 38660216418 is 81461206683.

38660216418 is a `hidden beast` number, since 38 + 6 + 602 + 1 + 6 + 4 + 1 + 8 = 666.

It is a super-2 number, since 2×38660216418² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219705 + ... + 354387.

It is an arithmetic number, because the mean of its divisors is an integer number (1796415192).

Almost surely, 2^38660216418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38660216418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43113964608).

38660216418 is an abundant number, since it is smaller than the sum of its proper divisors (47567712798).

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

38660216418 is a wasteful number, since it uses less digits than its factorization.

38660216418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135159 (or 135156 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 38660216418 in words is "thirty-eight billion, six hundred sixty million, two hundred sixteen thousand, four hundred eighteen".