12085749485 has 4 divisors (see below), whose sum is σ = 14502899388. Its totient is φ = 9668599584.

The previous prime is 12085749461. The next prime is 12085749499. The reversal of 12085749485 is 58494758021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58494758021 = 7 ⋅8356394003.

It can be written as a sum of positive squares in 2 ways, for example, as 8783063524 + 3302685961 = 93718^2 + 57469^2 .

It is a cyclic number.

It is not a de Polignac number, because 12085749485 - 2¹⁶ = 12085683949 is a prime.

It is a super-2 number, since 2×12085749485² (a number of 21 digits) contains 22 as substring.

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, 1208574944 + ... + 1208574953.

It is an arithmetic number, because the mean of its divisors is an integer number (3625724847).

Almost surely, 2^12085749485 is an apocalyptic number.

It is an amenable number.

12085749485 is a deficient number, since it is larger than the sum of its proper divisors (2417149903).

12085749485 is an equidigital number, since it uses as much as digits as its factorization.

12085749485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417149902.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 12085749485 in words is "twelve billion, eighty-five million, seven hundred forty-nine thousand, four hundred eighty-five".