68188420347040 has 192 divisors, whose sum is σ = 187042024108800. Its totient is φ = 23007098290176.

The previous prime is 68188420347031. The next prime is 68188420347167. The reversal of 68188420347040 is 4074302488186.

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, 75265066 + ... + 76165654.

It is an arithmetic number, because the mean of its divisors is an integer number (974177208900).

Almost surely, 2^{68188420347040} 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 68188420347040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93521012054400).

68188420347040 is an abundant number, since it is smaller than the sum of its proper divisors (118853603761760).

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

68188420347040 is a wasteful number, since it uses less digits than its factorization.

68188420347040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901687 (or 901679 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 55.

The spelling of 68188420347040 in words is "sixty-eight trillion, one hundred eighty-eight billion, four hundred twenty million, three hundred forty-seven thousand, forty".