68457006527640 has 256 divisors, whose sum is σ = 234479339136000. Its totient is φ = 15880081489920.

The previous prime is 68457006527639. The next prime is 68457006527671. The reversal of 68457006527640 is 4672560075486.

It is a happy number.

68457006527640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19949580 + ... + 23127899.

It is an arithmetic number, because the mean of its divisors is an integer number (915934918500).

Almost surely, 2^{68457006527640} is an apocalyptic number.

68457006527640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68457006527640 is an abundant number, since it is smaller than the sum of its proper divisors (166022332608360).

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

68457006527640 is a wasteful number, since it uses less digits than its factorization.

68457006527640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43077570 (or 43077566 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 60.

The spelling of 68457006527640 in words is "sixty-eight trillion, four hundred fifty-seven billion, six million, five hundred twenty-seven thousand, six hundred forty".