68742144605 has 32 divisors (see below), whose sum is σ = 88996579200. Its totient is φ = 50782298112.

The previous prime is 68742144589. The next prime is 68742144607. The reversal of 68742144605 is 50644124786.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68742144605 - 2⁴ = 68742144589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68742144605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68742144607) 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, 2609741 + ... + 2635949.

It is an arithmetic number, because the mean of its divisors is an integer number (2781143100).

Almost surely, 2^68742144605 is an apocalyptic number.

It is an amenable number.

68742144605 is a deficient number, since it is larger than the sum of its proper divisors (20254434595).

68742144605 is a wasteful number, since it uses less digits than its factorization.

68742144605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26813.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 68742144605 in words is "sixty-eight billion, seven hundred forty-two million, one hundred forty-four thousand, six hundred five".