613513897231 has 4 divisors (see below), whose sum is σ = 628477650864. Its totient is φ = 598550143600.

The previous prime is 613513897201. The next prime is 613513897237. The reversal of 613513897231 is 132798315316.

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

It is a cyclic number.

It is not a de Polignac number, because 613513897231 - 2⁷ = 613513897103 is a prime.

It is a super-2 number, since 2×613513897231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613513897237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7481876755 + ... + 7481876836.

It is an arithmetic number, because the mean of its divisors is an integer number (157119412716).

Almost surely, 2^613513897231 is an apocalyptic number.

613513897231 is a deficient number, since it is larger than the sum of its proper divisors (14963753633).

613513897231 is a wasteful number, since it uses less digits than its factorization.

613513897231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14963753632.

The product of its digits is 816480, while the sum is 49.

The spelling of 613513897231 in words is "six hundred thirteen billion, five hundred thirteen million, eight hundred ninety-seven thousand, two hundred thirty-one".