6123126013 has 4 divisors (see below), whose sum is σ = 6144024348. Its totient is φ = 6102227680.

The previous prime is 6123126007. The next prime is 6123126043. The reversal of 6123126013 is 3106213216.

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 3150913689 + 2972212324 = 56133^2 + 54518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6123126013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6123126043) 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, 10448728 + ... + 10449313.

It is an arithmetic number, because the mean of its divisors is an integer number (1536006087).

Almost surely, 2^6123126013 is an apocalyptic number.

It is an amenable number.

6123126013 is a deficient number, since it is larger than the sum of its proper divisors (20898335).

6123126013 is a wasteful number, since it uses less digits than its factorization.

6123126013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20898334.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6123126013 is about 78250.4058328134. The cubic root of 6123126013 is about 1829.4662375744.

Adding to 6123126013 its reverse (3106213216), we get a palindrome (9229339229).

The spelling of 6123126013 in words is "six billion, one hundred twenty-three million, one hundred twenty-six thousand, thirteen".