12003113761 has 4 divisors (see below), whose sum is σ = 12030835012. Its totient is φ = 11975392512.

The previous prime is 12003113747. The next prime is 12003113779. The reversal of 12003113761 is 16731130021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 596873761 + 11406240000 = 24431^2 + 106800^2 .

It is a cyclic number.

It is not a de Polignac number, because 12003113761 - 2⁵ = 12003113729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12003111761) 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, 13859976 + ... + 13860841.

It is an arithmetic number, because the mean of its divisors is an integer number (3007708753).

Almost surely, 2^12003113761 is an apocalyptic number.

It is an amenable number.

12003113761 is a deficient number, since it is larger than the sum of its proper divisors (27721251).

12003113761 is an equidigital number, since it uses as much as digits as its factorization.

12003113761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27721250.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 12003113761 its reverse (16731130021), we get a palindrome (28734243782).

The spelling of 12003113761 in words is "twelve billion, three million, one hundred thirteen thousand, seven hundred sixty-one".