68537438579 has 8 divisors (see below), whose sum is σ = 71015358000. Its totient is φ = 66067156512.

The previous prime is 68537438569. The next prime is 68537438581. The reversal of 68537438579 is 97583473586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68537438579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68537438509) 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, 1891064 + ... + 1926965.

It is an arithmetic number, because the mean of its divisors is an integer number (8876919750).

Almost surely, 2^68537438579 is an apocalyptic number.

68537438579 is a deficient number, since it is larger than the sum of its proper divisors (2477919421).

68537438579 is a wasteful number, since it uses less digits than its factorization.

68537438579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818677.

The product of its digits is 152409600, while the sum is 65.

The spelling of 68537438579 in words is "sixty-eight billion, five hundred thirty-seven million, four hundred thirty-eight thousand, five hundred seventy-nine".