68131064420913 has 32 divisors (see below), whose sum is σ = 101396889901440. Its totient is φ = 40403357729280.

The previous prime is 68131064420897. The next prime is 68131064421071. The reversal of 68131064420913 is 31902446013186.

It is not a de Polignac number, because 68131064420913 - 2⁴ = 68131064420897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68131064420113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57222331 + ... + 58400832.

It is an arithmetic number, because the mean of its divisors is an integer number (3168652809420).

Almost surely, 2^{68131064420913} is an apocalyptic number.

It is an amenable number.

68131064420913 is a deficient number, since it is larger than the sum of its proper divisors (33265825480527).

68131064420913 is a wasteful number, since it uses less digits than its factorization.

68131064420913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115623729.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 68131064420913 in words is "sixty-eight trillion, one hundred thirty-one billion, sixty-four million, four hundred twenty thousand, nine hundred thirteen".