16443423234735 has 24 divisors (see below), whose sum is σ = 30604902021936. Its totient is φ = 7516993478400.

The previous prime is 16443423234731. The next prime is 16443423234757. The reversal of 16443423234735 is 53743232434461.

It is a happy number.

It is not a de Polignac number, because 16443423234735 - 2² = 16443423234731 is a prime.

It is a super-3 number, since 3×16443423234735³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16443423234731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11186001466 + ... + 11186002935.

It is an arithmetic number, because the mean of its divisors is an integer number (1275204250914).

Almost surely, 2^{16443423234735} is an apocalyptic number.

16443423234735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16443423234735 is a deficient number, since it is larger than the sum of its proper divisors (14161478787201).

16443423234735 is a wasteful number, since it uses less digits than its factorization.

16443423234735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22372004423 (or 22372004416 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 51.

The spelling of 16443423234735 in words is "sixteen trillion, four hundred forty-three billion, four hundred twenty-three million, two hundred thirty-four thousand, seven hundred thirty-five".