67312068539 has 4 divisors (see below), whose sum is σ = 67313842056. Its totient is φ = 67310295024.

The previous prime is 67312068533. The next prime is 67312068541. The reversal of 67312068539 is 93586021376.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67312068539 - 2³² = 63017101243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67312068533) 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, 828554 + ... + 906159.

It is an arithmetic number, because the mean of its divisors is an integer number (16828460514).

Almost surely, 2^67312068539 is an apocalyptic number.

67312068539 is a deficient number, since it is larger than the sum of its proper divisors (1773517).

67312068539 is a wasteful number, since it uses less digits than its factorization.

67312068539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773516.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 67312068539 in words is "sixty-seven billion, three hundred twelve million, sixty-eight thousand, five hundred thirty-nine".