6545608551 has 24 divisors (see below), whose sum is σ = 9586129280. Its totient is φ = 4303530000.

The previous prime is 6545608541. The next prime is 6545608561. The reversal of 6545608551 is 1558065456.

6545608551 is a `hidden beast` number, since 6 + 5 + 4 + 560 + 85 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6545608541) and next prime (6545608561).

It is not a de Polignac number, because 6545608551 - 2⁷ = 6545608423 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6545608497 and 6545608506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545608501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171576 + ... + 206226.

Almost surely, 2^6545608551 is an apocalyptic number.

6545608551 is a deficient number, since it is larger than the sum of its proper divisors (3040520729).

6545608551 is a wasteful number, since it uses less digits than its factorization.

6545608551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34947 (or 34944 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The square root of 6545608551 is about 80904.9352697349. The cubic root of 6545608551 is about 1870.6103940246.

The spelling of 6545608551 in words is "six billion, five hundred forty-five million, six hundred eight thousand, five hundred fifty-one".