16628508671085 has 12 divisors (see below), whose sum is σ = 28822748363292. Its totient is φ = 8868537957888.

The previous prime is 16628508671077. The next prime is 16628508671123. The reversal of 16628508671085 is 58017680582661.

16628508671085 is a `hidden beast` number, since 1 + 6 + 62 + 8 + 508 + 67 + 1 + 0 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5584199074281 + 11044309596804 = 2363091^2 + 3323298^2 .

It is not a de Polignac number, because 16628508671085 - 2³ = 16628508671077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184761207412 + ... + 184761207501.

It is an arithmetic number, because the mean of its divisors is an integer number (2401895696941).

Almost surely, 2^{16628508671085} is an apocalyptic number.

16628508671085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16628508671085 is a deficient number, since it is larger than the sum of its proper divisors (12194239692207).

16628508671085 is a wasteful number, since it uses less digits than its factorization.

16628508671085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369522414924 (or 369522414921 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 16628508671085 in words is "sixteen trillion, six hundred twenty-eight billion, five hundred eight million, six hundred seventy-one thousand, eighty-five".