6545665456 has 40 divisors (see below), whose sum is σ = 13840060608. Its totient is φ = 2974248000.

The previous prime is 6545665403. The next prime is 6545665463.

6545665456 is nontrivially palindromic in base 10.

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, 715471 + ... + 724561.

Almost surely, 2^6545665456 is an apocalyptic number.

It is an amenable number.

6545665456 is an abundant number, since it is smaller than the sum of its proper divisors (7294395152).

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

6545665456 is a wasteful number, since it uses less digits than its factorization.

6545665456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201 (or 13195 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 52.

The square root of 6545665456 is about 80905.2869471458. The cubic root of 6545665456 is about 1870.6158147977.

The spelling of 6545665456 in words is "six billion, five hundred forty-five million, six hundred sixty-five thousand, four hundred fifty-six".