68605328032129 has 32 divisors (see below), whose sum is σ = 82627202211840. Its totient is φ = 55689727433472.

The previous prime is 68605328032123. The next prime is 68605328032169. The reversal of 68605328032129 is 92123082350686.

It is a cyclic number.

It is not a de Polignac number, because 68605328032129 - 2³⁵ = 68570968293761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68605328032129.

It is not an unprimeable number, because it can be changed into a prime (68605328032123) 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, 76782852 + ... + 77671210.

It is an arithmetic number, because the mean of its divisors is an integer number (2582100069120).

Almost surely, 2^{68605328032129} is an apocalyptic number.

It is an amenable number.

68605328032129 is a deficient number, since it is larger than the sum of its proper divisors (14021874179711).

68605328032129 is a wasteful number, since it uses less digits than its factorization.

68605328032129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893149.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 68605328032129 in words is "sixty-eight trillion, six hundred five billion, three hundred twenty-eight million, thirty-two thousand, one hundred twenty-nine".