68085544438 has 16 divisors (see below), whose sum is σ = 102413445120. Its totient is φ = 33947859816.

The previous prime is 68085544427. The next prime is 68085544447. The reversal of 68085544438 is 83444558086.

It is a super-2 number, since 2×68085544438² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036531 + ... + 1100257.

It is an arithmetic number, because the mean of its divisors is an integer number (6400840320).

Almost surely, 2^68085544438 is an apocalyptic number.

68085544438 is a deficient number, since it is larger than the sum of its proper divisors (34327900682).

68085544438 is a wasteful number, since it uses less digits than its factorization.

68085544438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65211.

The product of its (nonzero) digits is 14745600, while the sum is 55.

The spelling of 68085544438 in words is "sixty-eight billion, eighty-five million, five hundred forty-four thousand, four hundred thirty-eight".