6545751993 has 48 divisors (see below), whose sum is σ = 10924333056. Its totient is φ = 3882641040.

The previous prime is 6545751977. The next prime is 6545752019. The reversal of 6545751993 is 3991575456.

6545751993 is a `hidden beast` number, since 6 + 54 + 575 + 19 + 9 + 3 = 666.

It is not a de Polignac number, because 6545751993 - 2⁴ = 6545751977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6545751973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99580 + ... + 151682.

It is an arithmetic number, because the mean of its divisors is an integer number (227590272).

Almost surely, 2^6545751993 is an apocalyptic number.

It is an amenable number.

6545751993 is a deficient number, since it is larger than the sum of its proper divisors (4378581063).

6545751993 is a wasteful number, since it uses less digits than its factorization.

6545751993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52176 (or 52164 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 54.

The square root of 6545751993 is about 80905.8217497357. The cubic root of 6545751993 is about 1870.6240582563.

The spelling of 6545751993 in words is "six billion, five hundred forty-five million, seven hundred fifty-one thousand, nine hundred ninety-three".