16644025935 has 48 divisors (see below), whose sum is σ = 31228771680. Its totient is φ = 8409588480.

The previous prime is 16644025913. The next prime is 16644025949. The reversal of 16644025935 is 53952044661.

16644025935 is a `hidden beast` number, since 16 + 6 + 4 + 40 + 2 + 593 + 5 = 666.

It is not a de Polignac number, because 16644025935 - 2⁷ = 16644025807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 122026 + ... + 219495.

It is an arithmetic number, because the mean of its divisors is an integer number (650599410).

Almost surely, 2^16644025935 is an apocalyptic number.

16644025935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16644025935 is a deficient number, since it is larger than the sum of its proper divisors (14584745745).

16644025935 is a wasteful number, since it uses less digits than its factorization.

16644025935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341573 (or 341548 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 16644025935 in words is "sixteen billion, six hundred forty-four million, twenty-five thousand, nine hundred thirty-five".