7231222255566 has 16 divisors (see below), whose sum is σ = 14815187060688. Its totient is φ = 2351616993600.

The previous prime is 7231222255511. The next prime is 7231222255573. The reversal of 7231222255566 is 6655522221327.

It is a happy number.

It is a congruent number.

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, 14697605965 + ... + 14697606456.

It is an arithmetic number, because the mean of its divisors is an integer number (925949191293).

Almost surely, 2^{7231222255566} is an apocalyptic number.

7231222255566 is an abundant number, since it is smaller than the sum of its proper divisors (7583964805122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7231222255566 is a wasteful number, since it uses less digits than its factorization.

7231222255566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29395212467.

The product of its digits is 3024000, while the sum is 48.

The spelling of 7231222255566 in words is "seven trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred fifty-five thousand, five hundred sixty-six".