6551501564 has 12 divisors (see below), whose sum is σ = 11465706000. Its totient is φ = 3275585568.

The previous prime is 6551501527. The next prime is 6551501569. The reversal of 6551501564 is 4651051556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551501569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107417 + ... + 156975.

It is an arithmetic number, because the mean of its divisors is an integer number (955475500).

Almost surely, 2^6551501564 is an apocalyptic number.

It is an amenable number.

6551501564 is a deficient number, since it is larger than the sum of its proper divisors (4914204436).

6551501564 is a wasteful number, since it uses less digits than its factorization.

6551501564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82612 (or 82610 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 6551501564 is about 80941.3464429645. The cubic root of 6551501564 is about 1871.1715959752.

The spelling of 6551501564 in words is "six billion, five hundred fifty-one million, five hundred one thousand, five hundred sixty-four".