6534320545 has 4 divisors (see below), whose sum is σ = 7841184660. Its totient is φ = 5227456432.

The previous prime is 6534320537. The next prime is 6534320563. The reversal of 6534320545 is 5450234356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1431789921 + 5102530624 = 37839^2 + 71432^2 .

It is a cyclic number.

It is not a de Polignac number, because 6534320545 - 2³ = 6534320537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653432050 + ... + 653432059.

It is an arithmetic number, because the mean of its divisors is an integer number (1960296165).

Almost surely, 2^6534320545 is an apocalyptic number.

It is an amenable number.

6534320545 is a deficient number, since it is larger than the sum of its proper divisors (1306864115).

6534320545 is a wasteful number, since it uses less digits than its factorization.

6534320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306864114.

The product of its (nonzero) digits is 216000, while the sum is 37.

The square root of 6534320545 is about 80835.1442443199. The cubic root of 6534320545 is about 1869.5344761879.

The spelling of 6534320545 in words is "six billion, five hundred thirty-four million, three hundred twenty thousand, five hundred forty-five".