16628275693520 has 80 divisors (see below), whose sum is σ = 39050068766592. Its totient is φ = 6584375416320.

The previous prime is 16628275693517. The next prime is 16628275693531. The reversal of 16628275693520 is 2539657282661.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22736750 + ... + 23456690.

Almost surely, 2^{16628275693520} is an apocalyptic number.

16628275693520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16628275693520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19525034383296).

16628275693520 is an abundant number, since it is smaller than the sum of its proper divisors (22421793073072).

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

16628275693520 is a wasteful number, since it uses less digits than its factorization.

16628275693520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722860 (or 722854 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 16628275693520 in words is "sixteen trillion, six hundred twenty-eight billion, two hundred seventy-five million, six hundred ninety-three thousand, five hundred twenty".