182121518353 has 4 divisors (see below), whose sum is σ = 188401570740. Its totient is φ = 175841465968.

The previous prime is 182121518231. The next prime is 182121518357. The reversal of 182121518353 is 353815121281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 353815121281 = 17 ⋅20812654193.

It can be written as a sum of positive squares in 2 ways, for example, as 39201228049 + 142920290304 = 197993^2 + 378048^2 .

It is a cyclic number.

It is not a de Polignac number, because 182121518353 - 2¹³ = 182121510161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182121518357) 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, 3140026150 + ... + 3140026207.

It is an arithmetic number, because the mean of its divisors is an integer number (47100392685).

Almost surely, 2^182121518353 is an apocalyptic number.

It is an amenable number.

182121518353 is a deficient number, since it is larger than the sum of its proper divisors (6280052387).

182121518353 is an equidigital number, since it uses as much as digits as its factorization.

182121518353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280052386.

The product of its digits is 57600, while the sum is 40.

The spelling of 182121518353 in words is "one hundred eighty-two billion, one hundred twenty-one million, five hundred eighteen thousand, three hundred fifty-three".