12124745461 has 4 divisors (see below), whose sum is σ = 12130524000. Its totient is φ = 12118966924.

The previous prime is 12124745453. The next prime is 12124745467. The reversal of 12124745461 is 16454742121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16454742121 = 19 ⋅866039059.

It is a cyclic number.

It is not a de Polignac number, because 12124745461 - 2³ = 12124745453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12124745461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124745467) 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, 2886121 + ... + 2890318.

It is an arithmetic number, because the mean of its divisors is an integer number (3032631000).

Almost surely, 2^12124745461 is an apocalyptic number.

It is an amenable number.

12124745461 is a deficient number, since it is larger than the sum of its proper divisors (5778539).

12124745461 is an equidigital number, since it uses as much as digits as its factorization.

12124745461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778538.

The product of its digits is 53760, while the sum is 37.

The spelling of 12124745461 in words is "twelve billion, one hundred twenty-four million, seven hundred forty-five thousand, four hundred sixty-one".