16638332382 has 24 divisors (see below), whose sum is σ = 41199680496. Its totient is φ = 4753809216.

The previous prime is 16638332377. The next prime is 16638332407. The reversal of 16638332382 is 28323383661.

16638332382 is a `hidden beast` number, since 1 + 6 + 638 + 3 + 3 + 2 + 3 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66025003 + ... + 66025254.

It is an arithmetic number, because the mean of its divisors is an integer number (1716653354).

Almost surely, 2^16638332382 is an apocalyptic number.

16638332382 is an abundant number, since it is smaller than the sum of its proper divisors (24561348114).

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

16638332382 is a wasteful number, since it uses less digits than its factorization.

16638332382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132050272 (or 132050269 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

It can be divided in two parts, 166383 and 32382, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 16638332382 in words is "sixteen billion, six hundred thirty-eight million, three hundred thirty-two thousand, three hundred eighty-two".