613233661213 has 4 divisors (see below), whose sum is σ = 616315237600. Its totient is φ = 610152084828.

The previous prime is 613233661211. The next prime is 613233661237. The reversal of 613233661213 is 312166332316.

613233661213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 613233661213 - 2¹ = 613233661211 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 (613233661211) 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, 1540787895 + ... + 1540788292.

It is an arithmetic number, because the mean of its divisors is an integer number (154078809400).

Almost surely, 2^613233661213 is an apocalyptic number.

It is an amenable number.

613233661213 is a deficient number, since it is larger than the sum of its proper divisors (3081576387).

613233661213 is a wasteful number, since it uses less digits than its factorization.

613233661213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081576386.

The product of its digits is 69984, while the sum is 37.

Adding to 613233661213 its reverse (312166332316), we get a palindrome (925399993529).

The spelling of 613233661213 in words is "six hundred thirteen billion, two hundred thirty-three million, six hundred sixty-one thousand, two hundred thirteen".