6573512640 has 56 divisors (see below), whose sum is σ = 20870905680. Its totient is φ = 1752936448.

The previous prime is 6573512639. The next prime is 6573512663. The reversal of 6573512640 is 462153756.

It is a super-2 number, since 2×6573512640² = 86422136856479539200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3422745 + ... + 3424664.

Almost surely, 2^6573512640 is an apocalyptic number.

6573512640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6573512640 is an abundant number, since it is smaller than the sum of its proper divisors (14297393040).

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

6573512640 is a wasteful number, since it uses less digits than its factorization.

6573512640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847429 (or 6847419 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 6573512640 is about 81077.2017277360. The cubic root of 6573512640 is about 1873.2647782761.

The spelling of 6573512640 in words is "six billion, five hundred seventy-three million, five hundred twelve thousand, six hundred forty".