16440451845 has 8 divisors (see below), whose sum is σ = 26304722976. Its totient is φ = 8768240976.

The previous prime is 16440451843. The next prime is 16440451883. The reversal of 16440451845 is 54815404461.

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

It is not a de Polignac number, because 16440451845 - 2¹ = 16440451843 is a prime.

It is a super-3 number, since 3×16440451845³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16440451797 and 16440451806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440451843) 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, 548015047 + ... + 548015076.

It is an arithmetic number, because the mean of its divisors is an integer number (3288090372).

Almost surely, 2^16440451845 is an apocalyptic number.

16440451845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16440451845 is a deficient number, since it is larger than the sum of its proper divisors (9864271131).

16440451845 is a wasteful number, since it uses less digits than its factorization.

16440451845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096030131.

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 16440451845 in words is "sixteen billion, four hundred forty million, four hundred fifty-one thousand, eight hundred forty-five".