16441947647 has 8 divisors (see below), whose sum is σ = 18166039776. Its totient is φ = 14801957632.

The previous prime is 16441947581. The next prime is 16441947659. The reversal of 16441947647 is 74674914461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16441947647 - 2⁸ = 16441947391 is a prime.

It is a super-3 number, since 3×16441947647³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16441947047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21025118 + ... + 21025899.

It is an arithmetic number, because the mean of its divisors is an integer number (2270754972).

Almost surely, 2^16441947647 is an apocalyptic number.

16441947647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16441947647 is a deficient number, since it is larger than the sum of its proper divisors (1724092129).

16441947647 is a wasteful number, since it uses less digits than its factorization.

16441947647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42051057.

The product of its digits is 4064256, while the sum is 53.

The spelling of 16441947647 in words is "sixteen billion, four hundred forty-one million, nine hundred forty-seven thousand, six hundred forty-seven".