16440266604 has 24 divisors (see below), whose sum is σ = 38430766528. Its totient is φ = 5470068240.

The previous prime is 16440266603. The next prime is 16440266641. The reversal of 16440266604 is 40666204461.

It is a super-3 number, since 3×16440266604³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16440266603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245742 + ... + 1258869.

Almost surely, 2^16440266604 is an apocalyptic number.

It is an amenable number.

16440266604 is an abundant number, since it is smaller than the sum of its proper divisors (21990499924).

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

16440266604 is a wasteful number, since it uses less digits than its factorization.

16440266604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505165 (or 2505163 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 16440266604 in words is "sixteen billion, four hundred forty million, two hundred sixty-six thousand, six hundred four".