181108366901 has 16 divisors (see below), whose sum is σ = 225827445120. Its totient is φ = 141104652480.

The previous prime is 181108366843. The next prime is 181108366937. The reversal of 181108366901 is 109663801181.

It is a de Polignac number, because none of the positive numbers 2^k-181108366901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181108365901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441815 + ... + 746603.

It is an arithmetic number, because the mean of its divisors is an integer number (14114215320).

Almost surely, 2^181108366901 is an apocalyptic number.

181108366901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

181108366901 is a deficient number, since it is larger than the sum of its proper divisors (44719078219).

181108366901 is a wasteful number, since it uses less digits than its factorization.

181108366901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312524.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 181108366901 in words is "one hundred eighty-one billion, one hundred eight million, three hundred sixty-six thousand, nine hundred one".