6443540602 has 16 divisors (see below), whose sum is σ = 9950852520. Its totient is φ = 3127016448.

The previous prime is 6443540581. The next prime is 6443540629. The reversal of 6443540602 is 2060453446.

It can be written as a sum of positive squares in 4 ways, for example, as 6321681081 + 121859521 = 79509^2 + 11039^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76183 + ... + 136714.

Almost surely, 2^6443540602 is an apocalyptic number.

6443540602 is a deficient number, since it is larger than the sum of its proper divisors (3507311918).

6443540602 is a wasteful number, since it uses less digits than its factorization.

6443540602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213345.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 6443540602 is about 80271.6674923351. The cubic root of 6443540602 is about 1860.8363874397.

The spelling of 6443540602 in words is "six billion, four hundred forty-three million, five hundred forty thousand, six hundred two".