81053111092 has 12 divisors (see below), whose sum is σ = 143638425280. Its totient is φ = 40013561016.

The previous prime is 81053111033. The next prime is 81053111093. The reversal of 81053111092 is 29011135018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81053111093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128248278 + ... + 128248909.

Almost surely, 2^81053111092 is an apocalyptic number.

It is an amenable number.

81053111092 is a deficient number, since it is larger than the sum of its proper divisors (62585314188).

81053111092 is a wasteful number, since it uses less digits than its factorization.

81053111092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256497270 (or 256497268 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The spelling of 81053111092 in words is "eighty-one billion, fifty-three million, one hundred eleven thousand, ninety-two".