68535119645 has 30 divisors (see below), whose sum is σ = 85645402458. Its totient is φ = 52649058592.

The previous prime is 68535119617. The next prime is 68535119651. The reversal of 68535119645 is 54691153586.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18757493764 + 49777625881 = 136958^2 + 223109^2 .

It is not a de Polignac number, because 68535119645 - 2¹⁰ = 68535118621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1293115439 + ... + 1293115491.

Almost surely, 2^68535119645 is an apocalyptic number.

It is an amenable number.

68535119645 is a deficient number, since it is larger than the sum of its proper divisors (17110282813).

68535119645 is an frugal number, since it uses more digits than its factorization.

68535119645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 105 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 53.

The spelling of 68535119645 in words is "sixty-eight billion, five hundred thirty-five million, one hundred nineteen thousand, six hundred forty-five".