182121518485 has 4 divisors (see below), whose sum is σ = 218545822188. Its totient is φ = 145697214784.

The previous prime is 182121518477. The next prime is 182121518497. The reversal of 182121518485 is 584815121281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584815121281 = 137 ⋅4268723513.

It can be written as a sum of positive squares in 2 ways, for example, as 61380558001 + 120740960484 = 247751^2 + 347478^2 .

It is a cyclic number.

It is not a de Polignac number, because 182121518485 - 2³ = 182121518477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18212151844 + ... + 18212151853.

It is an arithmetic number, because the mean of its divisors is an integer number (54636455547).

Almost surely, 2^182121518485 is an apocalyptic number.

It is an amenable number.

182121518485 is a deficient number, since it is larger than the sum of its proper divisors (36424303703).

182121518485 is an equidigital number, since it uses as much as digits as its factorization.

182121518485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36424303702.

The product of its digits is 204800, while the sum is 46.

The spelling of 182121518485 in words is "one hundred eighty-two billion, one hundred twenty-one million, five hundred eighteen thousand, four hundred eighty-five".