16986191512 has 16 divisors (see below), whose sum is σ = 33722586360. Its totient is φ = 7993501824.

The previous prime is 16986191503. The next prime is 16986191531. The reversal of 16986191512 is 21519168961.

It is a happy number.

It is a super-2 number, since 2×16986191512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 62449098 + ... + 62449369.

Almost surely, 2^16986191512 is an apocalyptic number.

It is an amenable number.

16986191512 is a deficient number, since it is larger than the sum of its proper divisors (16736394848).

16986191512 is a wasteful number, since it uses less digits than its factorization.

16986191512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124898490 (or 124898486 counting only the distinct ones).

The product of its digits is 233280, while the sum is 49.

The spelling of 16986191512 in words is "sixteen billion, nine hundred eighty-six million, one hundred ninety-one thousand, five hundred twelve".