81448871126 has 8 divisors (see below), whose sum is σ = 139626636240. Its totient is φ = 34906659048.

The previous prime is 81448871113. The next prime is 81448871149. The reversal of 81448871126 is 62117884418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2908888241 + ... + 2908888268.

It is an arithmetic number, because the mean of its divisors is an integer number (17453329530).

Almost surely, 2^81448871126 is an apocalyptic number.

81448871126 is a deficient number, since it is larger than the sum of its proper divisors (58177765114).

81448871126 is a wasteful number, since it uses less digits than its factorization.

81448871126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817776518.

The product of its digits is 688128, while the sum is 50.

The spelling of 81448871126 in words is "eighty-one billion, four hundred forty-eight million, eight hundred seventy-one thousand, one hundred twenty-six".