4451856345 has 24 divisors (see below), whose sum is σ = 7723989000. Its totient is φ = 2372034816.

The previous prime is 4451856337. The next prime is 4451856347. The reversal of 4451856345 is 5436581544.

4451856345 is a `hidden beast` number, since 4 + 4 + 5 + 1 + 8 + 5 + 634 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2240223561 + 2211632784 = 47331^2 + 47028^2 .

It is not a de Polignac number, because 4451856345 - 2³ = 4451856337 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 4451856345.

It is not an unprimeable number, because it can be changed into a prime (4451856347) 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 23 ways as a sum of consecutive naturals, for example, 51 + ... + 94359.

It is an arithmetic number, because the mean of its divisors is an integer number (321832875).

Almost surely, 2^4451856345 is an apocalyptic number.

4451856345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4451856345 is a deficient number, since it is larger than the sum of its proper divisors (3272132655).

4451856345 is a wasteful number, since it uses less digits than its factorization.

4451856345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95369 (or 95366 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The square root of 4451856345 is about 66722.2327638996. The cubic root of 4451856345 is about 1645.0548412225.

The spelling of 4451856345 in words is "four billion, four hundred fifty-one million, eight hundred fifty-six thousand, three hundred forty-five".