68159644468 has 12 divisors (see below), whose sum is σ = 119281335712. Its totient is φ = 34079262840.

The previous prime is 68159644457. The next prime is 68159644493. The reversal of 68159644468 is 86444695186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263671 + ... + 453697.

Almost surely, 2^68159644468 is an apocalyptic number.

It is an amenable number.

68159644468 is a deficient number, since it is larger than the sum of its proper divisors (51121691244).

68159644468 is a wasteful number, since it uses less digits than its factorization.

68159644468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279702 (or 279700 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 61.

The spelling of 68159644468 in words is "sixty-eight billion, one hundred fifty-nine million, six hundred forty-four thousand, four hundred sixty-eight".