81108011006 has 16 divisors (see below), whose sum is σ = 132734334960. Its totient is φ = 36863906880.

The previous prime is 81108010987. The next prime is 81108011027. The reversal of 81108011006 is 60011080118.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86090 + ... + 411858.

It is an arithmetic number, because the mean of its divisors is an integer number (8295895935).

Almost surely, 2^81108011006 is an apocalyptic number.

81108011006 is a deficient number, since it is larger than the sum of its proper divisors (51626323954).

81108011006 is a wasteful number, since it uses less digits than its factorization.

81108011006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337099.

The product of its (nonzero) digits is 384, while the sum is 26.

The spelling of 81108011006 in words is "eighty-one billion, one hundred eight million, eleven thousand, six".