81224674461470 has 16 divisors (see below), whose sum is σ = 149315146244928. Its totient is φ = 31798595959200.

The previous prime is 81224674461443. The next prime is 81224674461569. The reversal of 81224674461470 is 7416447642218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86409227681 + ... + 86409228620.

It is an arithmetic number, because the mean of its divisors is an integer number (9332196640308).

Almost surely, 2^{81224674461470} is an apocalyptic number.

81224674461470 is a deficient number, since it is larger than the sum of its proper divisors (68090471783458).

81224674461470 is a wasteful number, since it uses less digits than its factorization.

81224674461470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172818456355.

The product of its (nonzero) digits is 14450688, while the sum is 56.

The spelling of 81224674461470 in words is "eighty-one trillion, two hundred twenty-four billion, six hundred seventy-four million, four hundred sixty-one thousand, four hundred seventy".