81011011036 has 12 divisors (see below), whose sum is σ = 142065241920. Its totient is φ = 40420941920.

The previous prime is 81011011019. The next prime is 81011011061. The reversal of 81011011036 is 63011011018.

It is a junction number, because it is equal to n+sod(n) for n = 81011010998 and 81011011016.

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, 21138745 + ... + 21142576.

It is an arithmetic number, because the mean of its divisors is an integer number (11838770160).

Almost surely, 2^81011011036 is an apocalyptic number.

It is an amenable number.

81011011036 is a deficient number, since it is larger than the sum of its proper divisors (61054230884).

81011011036 is a wasteful number, since it uses less digits than its factorization.

81011011036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42281804 (or 42281802 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 81011011036 in words is "eighty-one billion, eleven million, eleven thousand, thirty-six".