68565654920 has 192 divisors, whose sum is σ = 195002380800. Its totient is φ = 21552168960.

The previous prime is 68565654919. The next prime is 68565654953. The reversal of 68565654920 is 2945656586.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1124744 + ... + 1184136.

It is an arithmetic number, because the mean of its divisors is an integer number (1015637400).

Almost surely, 2^68565654920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68565654920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97501190400).

68565654920 is an abundant number, since it is smaller than the sum of its proper divisors (126436725880).

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

68565654920 is a wasteful number, since it uses less digits than its factorization.

68565654920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59468 (or 59457 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 56.

The spelling of 68565654920 in words is "sixty-eight billion, five hundred sixty-five million, six hundred fifty-four thousand, nine hundred twenty".