6561505346 has 8 divisors (see below), whose sum is σ = 10737008784. Its totient is φ = 2982502420.

The previous prime is 6561505309. The next prime is 6561505367. The reversal of 6561505346 is 6435051656.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149125100 + ... + 149125143.

It is an arithmetic number, because the mean of its divisors is an integer number (1342126098).

Almost surely, 2^6561505346 is an apocalyptic number.

6561505346 is a deficient number, since it is larger than the sum of its proper divisors (4175503438).

6561505346 is a wasteful number, since it uses less digits than its factorization.

6561505346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298250256.

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 6561505346 is about 81003.1193596889. The cubic root of 6561505346 is about 1872.1235036207.

The spelling of 6561505346 in words is "six billion, five hundred sixty-one million, five hundred five thousand, three hundred forty-six".