613143351421 has 4 divisors (see below), whose sum is σ = 621779173344. Its totient is φ = 604507529500.

The previous prime is 613143351419. The next prime is 613143351427. The reversal of 613143351421 is 124153341316.

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.

It is a cyclic number.

It is not a de Polignac number, because 613143351421 - 2¹ = 613143351419 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 (613143351427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317910855 + ... + 4317910996.

It is an arithmetic number, because the mean of its divisors is an integer number (155444793336).

Almost surely, 2^613143351421 is an apocalyptic number.

It is an amenable number.

613143351421 is a deficient number, since it is larger than the sum of its proper divisors (8635821923).

613143351421 is an equidigital number, since it uses as much as digits as its factorization.

613143351421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635821922.

The product of its digits is 25920, while the sum is 34.

Adding to 613143351421 its reverse (124153341316), we get a palindrome (737296692737).

The spelling of 613143351421 in words is "six hundred thirteen billion, one hundred forty-three million, three hundred fifty-one thousand, four hundred twenty-one".