67071725897 has 16 divisors (see below), whose sum is σ = 79274935872. Its totient is φ = 56052971520.

The previous prime is 67071725879. The next prime is 67071725921. The reversal of 67071725897 is 79852717076.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67071725897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67071725807) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4162568 + ... + 4178649.

It is an arithmetic number, because the mean of its divisors is an integer number (4954683492).

Almost surely, 2^67071725897 is an apocalyptic number.

It is an amenable number.

67071725897 is a deficient number, since it is larger than the sum of its proper divisors (12203209975).

67071725897 is a wasteful number, since it uses less digits than its factorization.

67071725897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341288.

The product of its (nonzero) digits is 10372320, while the sum is 59.

The spelling of 67071725897 in words is "sixty-seven billion, seventy-one million, seven hundred twenty-five thousand, eight hundred ninety-seven".