16064012646 has 24 divisors (see below), whose sum is σ = 37969484904. Its totient is φ = 4867882560.

The previous prime is 16064012633. The next prime is 16064012647. The reversal of 16064012646 is 64621046061.

16064012646 is a `hidden beast` number, since 1 + 6 + 0 + 6 + 4 + 0 + 1 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16064012646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16064012647) 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, 40565491 + ... + 40565886.

It is an arithmetic number, because the mean of its divisors is an integer number (1582061871).

Almost surely, 2^16064012646 is an apocalyptic number.

16064012646 is an abundant number, since it is smaller than the sum of its proper divisors (21905472258).

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

16064012646 is a wasteful number, since it uses less digits than its factorization.

16064012646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81131396 (or 81131393 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 16064012646 in words is "sixteen billion, sixty-four million, twelve thousand, six hundred forty-six".