16275268638 has 24 divisors (see below), whose sum is σ = 35575149168. Its totient is φ = 5377079232.

The previous prime is 16275268637. The next prime is 16275268679. The reversal of 16275268638 is 83686257261.

16275268638 is a `hidden beast` number, since 1 + 6 + 2 + 7 + 526 + 86 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16275268637) 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, 3998770 + ... + 4002837.

It is an arithmetic number, because the mean of its divisors is an integer number (1482297882).

Almost surely, 2^16275268638 is an apocalyptic number.

16275268638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16275268638 is an abundant number, since it is smaller than the sum of its proper divisors (19299880530).

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

16275268638 is a wasteful number, since it uses less digits than its factorization.

16275268638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001728 (or 8001725 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 16275268638 in words is "sixteen billion, two hundred seventy-five million, two hundred sixty-eight thousand, six hundred thirty-eight".