16118307857808 has 640 divisors, whose sum is σ = 52425444556800. Its totient is φ = 4707627724800.

The previous prime is 16118307857789. The next prime is 16118307857819. The reversal of 16118307857808 is 80875870381161.

16118307857808 is a `hidden beast` number, since 1 + 611 + 8 + 3 + 0 + 7 + 8 + 5 + 7 + 8 + 0 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1967802993 + ... + 1967811183.

It is an arithmetic number, because the mean of its divisors is an integer number (81914757120).

Almost surely, 2^{16118307857808} is an apocalyptic number.

16118307857808 is a gapful number since it is divisible by the number (18) 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 16118307857808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26212722278400).

16118307857808 is an abundant number, since it is smaller than the sum of its proper divisors (36307136698992).

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

16118307857808 is a wasteful number, since it uses less digits than its factorization.

16118307857808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468 (or 8456 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 63.

The spelling of 16118307857808 in words is "sixteen trillion, one hundred eighteen billion, three hundred seven million, eight hundred fifty-seven thousand, eight hundred eight".