12511541045 has 8 divisors (see below), whose sum is σ = 15069664440. Its totient is φ = 9972022720.

The previous prime is 12511541041. The next prime is 12511541071. The reversal of 12511541045 is 54014511521.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 12511317316 = 473^2 + 111854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12511541045 - 2² = 12511541041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12511540999 and 12511541017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12511541041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4649786 + ... + 4652475.

It is an arithmetic number, because the mean of its divisors is an integer number (1883708055).

Almost surely, 2^12511541045 is an apocalyptic number.

It is an amenable number.

12511541045 is a deficient number, since it is larger than the sum of its proper divisors (2558123395).

12511541045 is an equidigital number, since it uses as much as digits as its factorization.

12511541045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302535.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 12511541045 in words is "twelve billion, five hundred eleven million, five hundred forty-one thousand, forty-five".