67852015645 has 8 divisors (see below), whose sum is σ = 81424361304. Its totient is φ = 54280317504.

The previous prime is 67852015631. The next prime is 67852015681. The reversal of 67852015645 is 54651025876.

It can be written as a sum of positive squares in 4 ways, for example, as 612414009 + 67239601636 = 24747^2 + 259306^2 .

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 67852015645 - 2⁵ = 67852015613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110247 + ... + 384523.

It is an arithmetic number, because the mean of its divisors is an integer number (10178045163).

Almost surely, 2^67852015645 is an apocalyptic number.

It is an amenable number.

67852015645 is a deficient number, since it is larger than the sum of its proper divisors (13572345659).

67852015645 is a wasteful number, since it uses less digits than its factorization.

67852015645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323759.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 67852015645 in words is "sixty-seven billion, eight hundred fifty-two million, fifteen thousand, six hundred forty-five".