16486531727868 has 72 divisors (see below), whose sum is σ = 42693262715376. Its totient is φ = 5361156230400.

The previous prime is 16486531727851. The next prime is 16486531727893. The reversal of 16486531727868 is 86872713568461.

16486531727868 is a `hidden beast` number, since 1 + 6 + 4 + 8 + 6 + 531 + 7 + 2 + 7 + 86 + 8 = 666.

It is a super-3 number, since 3×16486531727868³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16486531727796 and 16486531727805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25273255 + ... + 25917377.

It is an arithmetic number, because the mean of its divisors is an integer number (592961982158).

Almost surely, 2^{16486531727868} is an apocalyptic number.

16486531727868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16486531727868 is an abundant number, since it is smaller than the sum of its proper divisors (26206730987508).

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

16486531727868 is a wasteful number, since it uses less digits than its factorization.

16486531727868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661515 (or 661510 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 72.

The spelling of 16486531727868 in words is "sixteen trillion, four hundred eighty-six billion, five hundred thirty-one million, seven hundred twenty-seven thousand, eight hundred sixty-eight".