16432435644647 has 8 divisors (see below), whose sum is σ = 17979487183632. Its totient is φ = 14894249731200.

The previous prime is 16432435644643. The next prime is 16432435644649. The reversal of 16432435644647 is 74644653423461.

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 16432435644647 - 2² = 16432435644643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16432435644643) 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, 2216402504 + ... + 2216409917.

It is an arithmetic number, because the mean of its divisors is an integer number (2247435897954).

Almost surely, 2^{16432435644647} is an apocalyptic number.

16432435644647 is a deficient number, since it is larger than the sum of its proper divisors (1547051538985).

16432435644647 is a wasteful number, since it uses less digits than its factorization.

16432435644647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432812769.

The product of its digits is 139345920, while the sum is 59.

The spelling of 16432435644647 in words is "sixteen trillion, four hundred thirty-two billion, four hundred thirty-five million, six hundred forty-four thousand, six hundred forty-seven".