181081801353 has 16 divisors (see below), whose sum is σ = 241999286400. Its totient is φ = 120443017344.

The previous prime is 181081801349. The next prime is 181081801391. The reversal of 181081801353 is 353108180181.

It is a happy number.

It is not a de Polignac number, because 181081801353 - 2² = 181081801349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (181081801253) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2867325 + ... + 2929797.

It is an arithmetic number, because the mean of its divisors is an integer number (15124955400).

Almost surely, 2^181081801353 is an apocalyptic number.

It is an amenable number.

181081801353 is a deficient number, since it is larger than the sum of its proper divisors (60917485047).

181081801353 is a wasteful number, since it uses less digits than its factorization.

181081801353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64688.

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 181081801353 in words is "one hundred eighty-one billion, eighty-one million, eight hundred one thousand, three hundred fifty-three".