67448423187640 has 64 divisors (see below), whose sum is σ = 165556232177760. Its totient is φ = 24526549470720.

The previous prime is 67448423187631. The next prime is 67448423187659. The reversal of 67448423187640 is 4678132484476.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92623842 + ... + 93349198.

Almost surely, 2^{67448423187640} is an apocalyptic number.

It is an amenable number.

67448423187640 is an abundant number, since it is smaller than the sum of its proper divisors (98107808990120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67448423187640 is a wasteful number, since it uses less digits than its factorization.

67448423187640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936712 (or 936708 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 64.

The spelling of 67448423187640 in words is "sixty-seven trillion, four hundred forty-eight billion, four hundred twenty-three million, one hundred eighty-seven thousand, six hundred forty".