181010012196 has 96 divisors (see below), whose sum is σ = 459029579008. Its totient is φ = 55185338880.

The previous prime is 181010012171. The next prime is 181010012201. The reversal of 181010012196 is 691210010181.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7809801 + ... + 7832943.

Almost surely, 2^181010012196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181010012196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229514789504).

181010012196 is an abundant number, since it is smaller than the sum of its proper divisors (278019566812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181010012196 is a wasteful number, since it uses less digits than its factorization.

181010012196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23621 (or 23619 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 30.

The spelling of 181010012196 in words is "one hundred eighty-one billion, ten million, twelve thousand, one hundred ninety-six".