6480061578 has 24 divisors (see below), whose sum is σ = 14059316388. Its totient is φ = 2157069312.

The previous prime is 6480061517. The next prime is 6480061613. The reversal of 6480061578 is 8751600846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6117273369 + 362788209 = 78213^2 + 19047^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232375 + ... + 258762.

Almost surely, 2^6480061578 is an apocalyptic number.

6480061578 is an abundant number, since it is smaller than the sum of its proper divisors (7579254810).

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

6480061578 is a wasteful number, since it uses less digits than its factorization.

6480061578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491878 (or 491875 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 6480061578 is about 80498.8296685113. The cubic root of 6480061578 is about 1864.3454090216.

The spelling of 6480061578 in words is "six billion, four hundred eighty million, sixty-one thousand, five hundred seventy-eight".