16128386277228 has 36 divisors (see below), whose sum is σ = 40785637445280. Its totient is φ = 5373931701216.

The previous prime is 16128386277221. The next prime is 16128386277251. The reversal of 16128386277228 is 82277268382161.

16128386277228 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 8 + 386 + 27 + 7 + 228 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16128386277221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91454763 + ... + 91630946.

It is an arithmetic number, because the mean of its divisors is an integer number (1132934373480).

Almost surely, 2^{16128386277228} is an apocalyptic number.

16128386277228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16128386277228 is an abundant number, since it is smaller than the sum of its proper divisors (24657251168052).

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

16128386277228 is a wasteful number, since it uses less digits than its factorization.

16128386277228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183088166 (or 183088161 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 63.

The spelling of 16128386277228 in words is "sixteen trillion, one hundred twenty-eight billion, three hundred eighty-six million, two hundred seventy-seven thousand, two hundred twenty-eight".