68218916730 has 64 divisors (see below), whose sum is σ = 164419227648. Its totient is φ = 18114743360.

The previous prime is 68218916699. The next prime is 68218916747. The reversal of 68218916730 is 3761981286.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10847647 + ... + 10853933.

It is an arithmetic number, because the mean of its divisors is an integer number (2569050432).

Almost surely, 2^68218916730 is an apocalyptic number.

68218916730 is an abundant number, since it is smaller than the sum of its proper divisors (96200310918).

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

68218916730 is a wasteful number, since it uses less digits than its factorization.

68218916730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 68218916730 in words is "sixty-eight billion, two hundred eighteen million, nine hundred sixteen thousand, seven hundred thirty".