6480305945 has 8 divisors (see below), whose sum is σ = 7853361480. Its totient is φ = 5132915200.

The previous prime is 6480305917. The next prime is 6480305977. The reversal of 6480305945 is 5495030846.

It can be written as a sum of positive squares in 4 ways, for example, as 543449344 + 5936856601 = 23312^2 + 77051^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-6480305945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6480305896 and 6480305905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6415640 + ... + 6416649.

It is an arithmetic number, because the mean of its divisors is an integer number (981670185).

Almost surely, 2^6480305945 is an apocalyptic number.

It is an amenable number.

6480305945 is a deficient number, since it is larger than the sum of its proper divisors (1373055535).

6480305945 is a wasteful number, since it uses less digits than its factorization.

6480305945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12832395.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 6480305945 is about 80500.3474837221. The cubic root of 6480305945 is about 1864.3688439207.

The spelling of 6480305945 in words is "six billion, four hundred eighty million, three hundred five thousand, nine hundred forty-five".