68061101638 has 12 divisors (see below), whose sum is σ = 108450303012. Its totient is φ = 32028753440.

The previous prime is 68061101611. The next prime is 68061101653. The reversal of 68061101638 is 83610116086.

It is a self number, because there is not a number n which added to its sum of digits gives 68061101638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58875808 + ... + 58876963.

It is an arithmetic number, because the mean of its divisors is an integer number (9037525251).

Almost surely, 2^68061101638 is an apocalyptic number.

68061101638 is a deficient number, since it is larger than the sum of its proper divisors (40389201374).

68061101638 is a wasteful number, since it uses less digits than its factorization.

68061101638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117752807 (or 117752790 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 68061101638 in words is "sixty-eight billion, sixty-one million, one hundred one thousand, six hundred thirty-eight".