68850020668 has 36 divisors (see below), whose sum is σ = 142329563208. Its totient is φ = 28888117440.

The previous prime is 68850020663. The next prime is 68850020693. The reversal of 68850020668 is 86602005886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68850020663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4622071 + ... + 4636942.

It is an arithmetic number, because the mean of its divisors is an integer number (3953598978).

Almost surely, 2^68850020668 is an apocalyptic number.

It is an amenable number.

68850020668 is an abundant number, since it is smaller than the sum of its proper divisors (73479542540).

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

68850020668 is a wasteful number, since it uses less digits than its factorization.

68850020668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9259054 (or 9259039 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 68850020668 in words is "sixty-eight billion, eight hundred fifty million, twenty thousand, six hundred sixty-eight".