613651723642 has 16 divisors (see below), whose sum is σ = 935661435264. Its totient is φ = 301765590000.

The previous prime is 613651723637. The next prime is 613651723661. The reversal of 613651723642 is 246327156316.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 613651723592 and 613651723601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990667 + ... + 1486177.

It is an arithmetic number, because the mean of its divisors is an integer number (58478839704).

Almost surely, 2^613651723642 is an apocalyptic number.

613651723642 is a deficient number, since it is larger than the sum of its proper divisors (322009711622).

613651723642 is a wasteful number, since it uses less digits than its factorization.

613651723642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505725.

The product of its digits is 1088640, while the sum is 46.

Adding to 613651723642 its reverse (246327156316), we get a palindrome (859978879958).

The spelling of 613651723642 in words is "six hundred thirteen billion, six hundred fifty-one million, seven hundred twenty-three thousand, six hundred forty-two".