16433739944 has 8 divisors (see below), whose sum is σ = 30813262410. Its totient is φ = 8216869968.

The previous prime is 16433739943. The next prime is 16433739983. The reversal of 16433739944 is 44993733461.

It can be written as a sum of positive squares in only one way, i.e., 8875524100 + 7558215844 = 94210^2 + 86938^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×16433739944² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16433739943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027108739 + ... + 1027108754.

Almost surely, 2^16433739944 is an apocalyptic number.

It is an amenable number.

16433739944 is a deficient number, since it is larger than the sum of its proper divisors (14379522466).

16433739944 is a wasteful number, since it uses less digits than its factorization.

16433739944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054217499 (or 2054217495 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 53.

The spelling of 16433739944 in words is "sixteen billion, four hundred thirty-three million, seven hundred thirty-nine thousand, nine hundred forty-four".