68061101640 has 64 divisors (see below), whose sum is σ = 233352351360. Its totient is φ = 15556823040.

The previous prime is 68061101611. The next prime is 68061101653. The reversal of 68061101640 is 4610116086.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40511721 + ... + 40513400.

It is an arithmetic number, because the mean of its divisors is an integer number (3646130490).

Almost surely, 2^68061101640 is an apocalyptic number.

68061101640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68061101640 is an abundant number, since it is smaller than the sum of its proper divisors (165291249720).

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

68061101640 is a wasteful number, since it uses less digits than its factorization.

68061101640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81025142 (or 81025138 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 68061101640 in words is "sixty-eight billion, sixty-one million, one hundred one thousand, six hundred forty".