16628792685 has 32 divisors (see below), whose sum is σ = 28047720960. Its totient is φ = 8389516608.

The previous prime is 16628792659. The next prime is 16628792729. The reversal of 16628792685 is 58629782661.

It is not a de Polignac number, because 16628792685 - 2¹¹ = 16628790637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151942 + ... + 237368.

It is an arithmetic number, because the mean of its divisors is an integer number (876491280).

Almost surely, 2^16628792685 is an apocalyptic number.

16628792685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16628792685 is a deficient number, since it is larger than the sum of its proper divisors (11418928275).

16628792685 is a wasteful number, since it uses less digits than its factorization.

16628792685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86137.

The product of its digits is 17418240, while the sum is 60.

The spelling of 16628792685 in words is "sixteen billion, six hundred twenty-eight million, seven hundred ninety-two thousand, six hundred eighty-five".