81089151796 has 6 divisors (see below), whose sum is σ = 141906015650. Its totient is φ = 40544575896.

The previous prime is 81089151757. The next prime is 81089151799. The reversal of 81089151796 is 69715198018.

It can be written as a sum of positive squares in only one way, i.e., 80417616400 + 671535396 = 283580^2 + 25914^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81089151799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136143971 + ... + 10136143978.

Almost surely, 2^81089151796 is an apocalyptic number.

It is an amenable number.

81089151796 is a deficient number, since it is larger than the sum of its proper divisors (60816863854).

81089151796 is a wasteful number, since it uses less digits than its factorization.

81089151796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20272287953 (or 20272287951 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 81089151796 in words is "eighty-one billion, eighty-nine million, one hundred fifty-one thousand, seven hundred ninety-six".