6545751994 has 8 divisors (see below), whose sum is σ = 10157201460. Its totient is φ = 3160018176.

The previous prime is 6545751977. The next prime is 6545752019. The reversal of 6545751994 is 4991575456.

It can be written as a sum of positive squares in 2 ways, for example, as 6405921369 + 139830625 = 80037^2 + 11825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 56428839 + ... + 56428954.

Almost surely, 2^6545751994 is an apocalyptic number.

6545751994 is a deficient number, since it is larger than the sum of its proper divisors (3611449466).

6545751994 is a wasteful number, since it uses less digits than its factorization.

6545751994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112857824.

The product of its digits is 6804000, while the sum is 55.

The square root of 6545751994 is about 80905.8217559157. The cubic root of 6545751994 is about 1870.6240583516.

The spelling of 6545751994 in words is "six billion, five hundred forty-five million, seven hundred fifty-one thousand, nine hundred ninety-four".