7068221136506 has 4 divisors (see below), whose sum is σ = 10602331704762. Its totient is φ = 3534110568252.

The previous prime is 7068221136443. The next prime is 7068221136523. The reversal of 7068221136506 is 6056311228607.

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., 6949502988481 + 118718148025 = 2636191^2 + 344555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1767055284125 + ... + 1767055284128.

Almost surely, 2^{7068221136506} is an apocalyptic number.

7068221136506 is a deficient number, since it is larger than the sum of its proper divisors (3534110568256).

7068221136506 is a wasteful number, since it uses less digits than its factorization.

7068221136506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534110568255.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 7068221136506 in words is "seven trillion, sixty-eight billion, two hundred twenty-one million, one hundred thirty-six thousand, five hundred six".