16269809664 has 48 divisors (see below), whose sum is σ = 43375583160. Its totient is φ = 5423267840.

The previous prime is 16269809663. The next prime is 16269809669. The reversal of 16269809664 is 46690896261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16269809663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317897 + ... + 1330184.

Almost surely, 2^16269809664 is an apocalyptic number.

It is an amenable number.

16269809664 is an abundant number, since it is smaller than the sum of its proper divisors (27105773496).

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

16269809664 is an equidigital number, since it uses as much as digits as its factorization.

16269809664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648106 (or 2648086 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 16269809664 in words is "sixteen billion, two hundred sixty-nine million, eight hundred nine thousand, six hundred sixty-four".