16441811977 has 12 divisors (see below), whose sum is σ = 16572286000. Its totient is φ = 16312239000.

The previous prime is 16441811959. The next prime is 16441812017. The reversal of 16441811977 is 77911814461.

It is not a de Polignac number, because 16441811977 - 2⁷ = 16441811849 is a prime.

It is a super-3 number, since 3×16441811977³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16441811977.

It is not an unprimeable number, because it can be changed into a prime (16441811077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31437238 + ... + 31437760.

Almost surely, 2^16441811977 is an apocalyptic number.

It is an amenable number.

16441811977 is a deficient number, since it is larger than the sum of its proper divisors (130474023).

16441811977 is an frugal number, since it uses more digits than its factorization.

16441811977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 1273 counting only the distinct ones).

The product of its digits is 338688, while the sum is 49.

The spelling of 16441811977 in words is "sixteen billion, four hundred forty-one million, eight hundred eleven thousand, nine hundred seventy-seven".