81096231076 has 27 divisors (see below), whose sum is σ = 165096872577. Its totient is φ = 34753818960.

The previous prime is 81096231059. The next prime is 81096231121. The reversal of 81096231076 is 67013269018.

The square root of 81096231076 is 284774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 50861976676 + 30234254400 = 225526^2 + 173880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3976666 + ... + 3997006.

Almost surely, 2^81096231076 is an apocalyptic number.

81096231076 is the 284774-th square number.

It is an amenable number.

81096231076 is an abundant number, since it is smaller than the sum of its proper divisors (84000641501).

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

81096231076 is an frugal number, since it uses more digits than its factorization.

81096231076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40700 (or 20350 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 81096231076 in words is "eighty-one billion, ninety-six million, two hundred thirty-one thousand, seventy-six".