6559972436 has 6 divisors (see below), whose sum is σ = 11479951770. Its totient is φ = 3279986216.

The previous prime is 6559972429. The next prime is 6559972453. The reversal of 6559972436 is 6342799556.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5803392400 + 756580036 = 76180^2 + 27506^2 .

It is a super-2 number, since 2×6559972436² = 86066476722159548192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 819996551 + ... + 819996558.

It is an arithmetic number, because the mean of its divisors is an integer number (1913325295).

Almost surely, 2^6559972436 is an apocalyptic number.

It is an amenable number.

6559972436 is a deficient number, since it is larger than the sum of its proper divisors (4919979334).

6559972436 is a wasteful number, since it uses less digits than its factorization.

6559972436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639993113 (or 1639993111 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 56.

The square root of 6559972436 is about 80993.6567639713. The cubic root of 6559972436 is about 1871.9777027107.

The spelling of 6559972436 in words is "six billion, five hundred fifty-nine million, nine hundred seventy-two thousand, four hundred thirty-six".