16271642766 has 16 divisors (see below), whose sum is σ = 32559753600. Its totient is φ = 5421136248.

The previous prime is 16271642759. The next prime is 16271642791. The reversal of 16271642766 is 66724617261.

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, 673306 + ... + 697053.

It is an arithmetic number, because the mean of its divisors is an integer number (2034984600).

Almost surely, 2^16271642766 is an apocalyptic number.

16271642766 is an abundant number, since it is smaller than the sum of its proper divisors (16288110834).

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

16271642766 is a wasteful number, since it uses less digits than its factorization.

16271642766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372343.

The product of its digits is 1016064, while the sum is 48.

The spelling of 16271642766 in words is "sixteen billion, two hundred seventy-one million, six hundred forty-two thousand, seven hundred sixty-six".