68134085539 has 4 divisors (see below), whose sum is σ = 73375169056. Its totient is φ = 62893002024.

The previous prime is 68134085533. The next prime is 68134085563. The reversal of 68134085539 is 93558043186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93558043186 = 2 ⋅46779021593.

It is a cyclic number.

It is not a de Polignac number, because 68134085539 - 2²³ = 68125696931 is a prime.

It is a super-2 number, since 2×68134085539² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68134085533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2620541739 + ... + 2620541764.

It is an arithmetic number, because the mean of its divisors is an integer number (18343792264).

Almost surely, 2^68134085539 is an apocalyptic number.

68134085539 is a deficient number, since it is larger than the sum of its proper divisors (5241083517).

68134085539 is a wasteful number, since it uses less digits than its factorization.

68134085539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241083516.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 68134085539 in words is "sixty-eight billion, one hundred thirty-four million, eighty-five thousand, five hundred thirty-nine".