68538445742 has 16 divisors (see below), whose sum is σ = 116543106960. Its totient is φ = 29968227072.

The previous prime is 68538445711. The next prime is 68538445747. The reversal of 68538445742 is 24754483586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68538445747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69370403 + ... + 69371390.

It is an arithmetic number, because the mean of its divisors is an integer number (7283944185).

Almost surely, 2^68538445742 is an apocalyptic number.

68538445742 is a deficient number, since it is larger than the sum of its proper divisors (48004661218).

68538445742 is a wasteful number, since it uses less digits than its factorization.

68538445742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138741827.

The product of its digits is 25804800, while the sum is 56.

It can be divided in two parts, 6853844 and 5742, that added together give a palindrome (6859586).

The spelling of 68538445742 in words is "sixty-eight billion, five hundred thirty-eight million, four hundred forty-five thousand, seven hundred forty-two".