68347155547 has 16 divisors (see below), whose sum is σ = 79293916800. Its totient is φ = 58256720640.

The previous prime is 68347155529. The next prime is 68347155563. The reversal of 68347155547 is 74555174386.

It is a cyclic number.

It is not a de Polignac number, because 68347155547 - 2¹¹ = 68347153499 is a prime.

It is a super-3 number, since 3×68347155547³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68347155517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665397 + ... + 1705942.

It is an arithmetic number, because the mean of its divisors is an integer number (4955869800).

Almost surely, 2^68347155547 is an apocalyptic number.

68347155547 is a deficient number, since it is larger than the sum of its proper divisors (10946761253).

68347155547 is a wasteful number, since it uses less digits than its factorization.

68347155547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371466.

The product of its digits is 14112000, while the sum is 55.

The spelling of 68347155547 in words is "sixty-eight billion, three hundred forty-seven million, one hundred fifty-five thousand, five hundred forty-seven".