6545867450 has 12 divisors (see below), whose sum is σ = 12175313550. Its totient is φ = 2618346960.

The previous prime is 6545867431. The next prime is 6545867453. The reversal of 6545867450 is 547685456.

It can be written as a sum of positive squares in 3 ways, for example, as 5144188729 + 1401678721 = 71723^2 + 37439^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 130917349 = 6545867450 / (6 + 5 + 4 + 5 + 8 + 6 + 7 + 4 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (6545867453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65458625 + ... + 65458724.

Almost surely, 2^6545867450 is an apocalyptic number.

6545867450 is a deficient number, since it is larger than the sum of its proper divisors (5629446100).

6545867450 is a wasteful number, since it uses less digits than its factorization.

6545867450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130917361 (or 130917356 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The square root of 6545867450 is about 80906.5352737342. The cubic root of 6545867450 is about 1870.6350565023.

The spelling of 6545867450 in words is "six billion, five hundred forty-five million, eight hundred sixty-seven thousand, four hundred fifty".