6511667472 has 30 divisors (see below), whose sum is σ = 18223625342. Its totient is φ = 2170555776.

The previous prime is 6511667429. The next prime is 6511667527. The reversal of 6511667472 is 2747661156.

6511667472 is a `hidden beast` number, since 6 + 5 + 116 + 67 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4658881536 + 1852785936 = 68256^2 + 43044^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22609813 + ... + 22610100.

Almost surely, 2^6511667472 is an apocalyptic number.

It is an amenable number.

6511667472 is an abundant number, since it is smaller than the sum of its proper divisors (11711957870).

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

6511667472 is a wasteful number, since it uses less digits than its factorization.

6511667472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45219927 (or 45219918 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 6511667472 is about 80694.9036308985. The cubic root of 6511667472 is about 1867.3715511939.

The spelling of 6511667472 in words is "six billion, five hundred eleven million, six hundred sixty-seven thousand, four hundred seventy-two".