6664493830426 has 4 divisors (see below), whose sum is σ = 9996740745642. Its totient is φ = 3332246915212.

The previous prime is 6664493830403. The next prime is 6664493830447. The reversal of 6664493830426 is 6240383944666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5892265905201 + 772227925225 = 2427399^2 + 878765^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1666123457605 + ... + 1666123457608.

Almost surely, 2^{6664493830426} is an apocalyptic number.

6664493830426 is a deficient number, since it is larger than the sum of its proper divisors (3332246915216).

6664493830426 is a wasteful number, since it uses less digits than its factorization.

6664493830426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332246915215.

The product of its (nonzero) digits is 107495424, while the sum is 61.

The spelling of 6664493830426 in words is "six trillion, six hundred sixty-four billion, four hundred ninety-three million, eight hundred thirty thousand, four hundred twenty-six".