67316140645 has 8 divisors (see below), whose sum is σ = 86993166456. Its totient is φ = 49710380736.

The previous prime is 67316140631. The next prime is 67316140691. The reversal of 67316140645 is 54604161376.

It can be written as a sum of positive squares in 4 ways, for example, as 6395040961 + 60921099684 = 79969^2 + 246822^2 .

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 67316140645 - 2⁵ = 67316140613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517816402 + ... + 517816531.

It is an arithmetic number, because the mean of its divisors is an integer number (10874145807).

Almost surely, 2^67316140645 is an apocalyptic number.

67316140645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67316140645 is a deficient number, since it is larger than the sum of its proper divisors (19677025811).

67316140645 is a wasteful number, since it uses less digits than its factorization.

67316140645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035632951.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 67316140645 in words is "sixty-seven billion, three hundred sixteen million, one hundred forty thousand, six hundred forty-five".