67057312127 has 4 divisors (see below), whose sum is σ = 72215566920. Its totient is φ = 61899057336.

The previous prime is 67057312117. The next prime is 67057312129. The reversal of 67057312127 is 72121375076.

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 67057312127 - 2⁴ = 67057312111 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 (67057312129) 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, 2579127377 + ... + 2579127402.

It is an arithmetic number, because the mean of its divisors is an integer number (18053891730).

Almost surely, 2^67057312127 is an apocalyptic number.

67057312127 is a deficient number, since it is larger than the sum of its proper divisors (5158254793).

67057312127 is a wasteful number, since it uses less digits than its factorization.

67057312127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158254792.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 67057312127 in words is "sixty-seven billion, fifty-seven million, three hundred twelve thousand, one hundred twenty-seven".