6564326516 has 12 divisors (see below), whose sum is σ = 12531896160. Its totient is φ = 2983784760.

The previous prime is 6564326507. The next prime is 6564326533. The reversal of 6564326516 is 6156234656.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 149189239 = 6564326516 / (6 + 5 + 6 + 4 + 3 + 2 + 6 + 5 + 1 + 6).

It is a congruent number.

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, 74594576 + ... + 74594663.

It is an arithmetic number, because the mean of its divisors is an integer number (1044324680).

Almost surely, 2^6564326516 is an apocalyptic number.

It is an amenable number.

6564326516 is a deficient number, since it is larger than the sum of its proper divisors (5967569644).

6564326516 is a wasteful number, since it uses less digits than its factorization.

6564326516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149189254 (or 149189252 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The square root of 6564326516 is about 81020.5314472819. The cubic root of 6564326516 is about 1872.3917765050.

The spelling of 6564326516 in words is "six billion, five hundred sixty-four million, three hundred twenty-six thousand, five hundred sixteen".