16554424436 has 24 divisors (see below), whose sum is σ = 31642371264. Its totient is φ = 7515578880.

The previous prime is 16554424433. The next prime is 16554424457. The reversal of 16554424436 is 63442445561.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554424433) 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, 192365 + ... + 264788.

It is an arithmetic number, because the mean of its divisors is an integer number (1318432136).

Almost surely, 2^16554424436 is an apocalyptic number.

It is an amenable number.

16554424436 is a deficient number, since it is larger than the sum of its proper divisors (15087946828).

16554424436 is a wasteful number, since it uses less digits than its factorization.

16554424436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457991 (or 457989 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

Adding to 16554424436 its reverse (63442445561), we get a palindrome (79996869997).

The spelling of 16554424436 in words is "sixteen billion, five hundred fifty-four million, four hundred twenty-four thousand, four hundred thirty-six".