16147231686 has 96 divisors (see below), whose sum is σ = 38689073280. Its totient is φ = 4989866112.

The previous prime is 16147231663. The next prime is 16147231691. The reversal of 16147231686 is 68613274161.

16147231686 is a `hidden beast` number, since 1 + 614 + 7 + 23 + 1 + 6 + 8 + 6 = 666.

It is a super-2 number, since 2×16147231686² (a number of 21 digits) contains 22 as substring.

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, 1037881 + ... + 1053323.

It is an arithmetic number, because the mean of its divisors is an integer number (403011180).

Almost surely, 2^16147231686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16147231686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19344536640).

16147231686 is an abundant number, since it is smaller than the sum of its proper divisors (22541841594).

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

16147231686 is a wasteful number, since it uses less digits than its factorization.

16147231686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555 (or 15532 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 16147231686 in words is "sixteen billion, one hundred forty-seven million, two hundred thirty-one thousand, six hundred eighty-six".