67238035247 has 4 divisors (see below), whose sum is σ = 67260807600. Its totient is φ = 67215262896.

The previous prime is 67238035243. The next prime is 67238035261. The reversal of 67238035247 is 74253083276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67238035247 - 2² = 67238035243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67238035243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11381747 + ... + 11387652.

It is an arithmetic number, because the mean of its divisors is an integer number (16815201900).

Almost surely, 2^67238035247 is an apocalyptic number.

67238035247 is a deficient number, since it is larger than the sum of its proper divisors (22772353).

67238035247 is a wasteful number, since it uses less digits than its factorization.

67238035247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772352.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 67238035247 in words is "sixty-seven billion, two hundred thirty-eight million, thirty-five thousand, two hundred forty-seven".