16580128508 has 6 divisors (see below), whose sum is σ = 29015224896. Its totient is φ = 8290064252.

The previous prime is 16580128459. The next prime is 16580128541. The reversal of 16580128508 is 80582108561.

It is a super-2 number, since 2×16580128508² (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 as a sum of consecutive naturals, namely, 2072516060 + ... + 2072516067.

It is an arithmetic number, because the mean of its divisors is an integer number (4835870816).

Almost surely, 2^16580128508 is an apocalyptic number.

It is an amenable number.

16580128508 is a deficient number, since it is larger than the sum of its proper divisors (12435096388).

16580128508 is a wasteful number, since it uses less digits than its factorization.

16580128508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145032131 (or 4145032129 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 44.

The spelling of 16580128508 in words is "sixteen billion, five hundred eighty million, one hundred twenty-eight thousand, five hundred eight".