16388788890125 has 8 divisors (see below), whose sum is σ = 20453208535032. Its totient is φ = 13111031112000.

The previous prime is 16388788890053. The next prime is 16388788890163. The reversal of 16388788890125 is 52109888788361.

It can be written as a sum of positive squares in 4 ways, for example, as 90305659081 + 16298483231044 = 300509^2 + 4037138^2 .

It is not a de Polignac number, because 16388788890125 - 2¹⁶ = 16388788824589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65555155436 + ... + 65555155685.

It is an arithmetic number, because the mean of its divisors is an integer number (2556651066879).

Almost surely, 2^{16388788890125} is an apocalyptic number.

It is an amenable number.

16388788890125 is a deficient number, since it is larger than the sum of its proper divisors (4064419644907).

16388788890125 is an equidigital number, since it uses as much as digits as its factorization.

16388788890125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131110311136 (or 131110311126 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 74.

The spelling of 16388788890125 in words is "sixteen trillion, three hundred eighty-eight billion, seven hundred eighty-eight million, eight hundred ninety thousand, one hundred twenty-five".