16439315445 has 64 divisors (see below), whose sum is σ = 33417031680. Its totient is φ = 7511400000.

The previous prime is 16439315437. The next prime is 16439315447. The reversal of 16439315445 is 54451393461.

16439315445 is a `hidden beast` number, since 16 + 4 + 3 + 93 + 1 + 544 + 5 = 666.

It is not a de Polignac number, because 16439315445 - 2³ = 16439315437 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16439315445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16439315447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3069520 + ... + 3074870.

It is an arithmetic number, because the mean of its divisors is an integer number (522141120).

Almost surely, 2^16439315445 is an apocalyptic number.

16439315445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16439315445 is an abundant number, since it is smaller than the sum of its proper divisors (16977716235).

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

16439315445 is a wasteful number, since it uses less digits than its factorization.

16439315445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623 (or 8617 counting only the distinct ones).

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

The spelling of 16439315445 in words is "sixteen billion, four hundred thirty-nine million, three hundred fifteen thousand, four hundred forty-five".