67136329537 has 8 divisors (see below), whose sum is σ = 68017303656. Its totient is φ = 66261021312.

The previous prime is 67136329529. The next prime is 67136329543. The reversal of 67136329537 is 73592363176.

It can be written as a sum of positive squares in 4 ways, for example, as 7893256336 + 59243073201 = 88844^2 + 243399^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 67136329537 - 2³ = 67136329529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67136329567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392618 + ... + 1440019.

It is an arithmetic number, because the mean of its divisors is an integer number (8502162957).

Almost surely, 2^67136329537 is an apocalyptic number.

It is an amenable number.

67136329537 is a deficient number, since it is larger than the sum of its proper divisors (880974119).

67136329537 is a wasteful number, since it uses less digits than its factorization.

67136329537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832947.

The product of its digits is 4286520, while the sum is 52.

The spelling of 67136329537 in words is "sixty-seven billion, one hundred thirty-six million, three hundred twenty-nine thousand, five hundred thirty-seven".