68129113648 has 20 divisors (see below), whose sum is σ = 137739295728. Its totient is φ = 32583488960.

The previous prime is 68129113631. The next prime is 68129113687. The reversal of 68129113648 is 84631192186.

It is a happy number.

It is a super-2 number, since 2×68129113648² (a number of 22 digits) contains 22 as substring.

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, 92566363 + ... + 92567098.

Almost surely, 2^68129113648 is an apocalyptic number.

It is an amenable number.

68129113648 is an abundant number, since it is smaller than the sum of its proper divisors (69610182080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68129113648 is a wasteful number, since it uses less digits than its factorization.

68129113648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185133492 (or 185133486 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The spelling of 68129113648 in words is "sixty-eight billion, one hundred twenty-nine million, one hundred thirteen thousand, six hundred forty-eight".