513225442642 has 32 divisors (see below), whose sum is σ = 845595936000. Its totient is φ = 231681331200.

The previous prime is 513225442621. The next prime is 513225442649. The reversal of 513225442642 is 246244522315.

It is a junction number, because it is equal to n+sod(n) for n = 513225442595 and 513225442604.

It is not an unprimeable number, because it can be changed into a prime (513225442649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36441042 + ... + 36455122.

It is an arithmetic number, because the mean of its divisors is an integer number (26424873000).

Almost surely, 2^513225442642 is an apocalyptic number.

513225442642 is a deficient number, since it is larger than the sum of its proper divisors (332370493358).

513225442642 is a wasteful number, since it uses less digits than its factorization.

513225442642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25362.

The product of its digits is 460800, while the sum is 40.

Adding to 513225442642 its reverse (246244522315), we get a palindrome (759469964957).

The spelling of 513225442642 in words is "five hundred thirteen billion, two hundred twenty-five million, four hundred forty-two thousand, six hundred forty-two".