16544043402 has 8 divisors (see below), whose sum is σ = 33088086816. Its totient is φ = 5514681132.

The previous prime is 16544043401. The next prime is 16544043419. The reversal of 16544043402 is 20434044561.

It is a happy number.

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

16544043402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (16544043401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378670278 + ... + 1378670289.

It is an arithmetic number, because the mean of its divisors is an integer number (4136010852).

Almost surely, 2^16544043402 is an apocalyptic number.

16544043402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16544043402 is a wasteful number, since it uses less digits than its factorization.

16544043402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757340572.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 16544043402 its reverse (20434044561), we get a palindrome (36978087963).

The spelling of 16544043402 in words is "sixteen billion, five hundred forty-four million, forty-three thousand, four hundred two".