16027748388 has 18 divisors (see below), whose sum is σ = 40514586294. Its totient is φ = 5342582784.

The previous prime is 16027748377. The next prime is 16027748447. The reversal of 16027748388 is 88384772061.

It is a happy number.

16027748388 is a `hidden beast` number, since 1 + 60 + 27 + 7 + 483 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12972754404 + 3054993984 = 113898^2 + 55272^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222607581 + ... + 222607652.

Almost surely, 2^16027748388 is an apocalyptic number.

16027748388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16027748388 is an abundant number, since it is smaller than the sum of its proper divisors (24486837906).

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

16027748388 is a wasteful number, since it uses less digits than its factorization.

16027748388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445215243 (or 445215238 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 16027748388 in words is "sixteen billion, twenty-seven million, seven hundred forty-eight thousand, three hundred eighty-eight".