68134629013640 has 64 divisors (see below), whose sum is σ = 176171306088960. Its totient is φ = 23231380988160.

The previous prime is 68134629013637. The next prime is 68134629013697. The reversal of 68134629013640 is 4631092643186.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672153632 + ... + 672254991.

It is an arithmetic number, because the mean of its divisors is an integer number (2752676657640).

Almost surely, 2^{68134629013640} is an apocalyptic number.

It is an amenable number.

68134629013640 is an abundant number, since it is smaller than the sum of its proper divisors (108036677075320).

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

68134629013640 is a wasteful number, since it uses less digits than its factorization.

68134629013640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344408822 (or 1344408818 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 68134629013640 in words is "sixty-eight trillion, one hundred thirty-four billion, six hundred twenty-nine million, thirteen thousand, six hundred forty".