67727378071 has 4 divisors (see below), whose sum is σ = 67732843144. Its totient is φ = 67721913000.

The previous prime is 67727378023. The next prime is 67727378077. The reversal of 67727378071 is 17087372776.

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 67727378071 - 2¹¹ = 67727376023 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 (67727378077) 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, 2713905 + ... + 2738746.

It is an arithmetic number, because the mean of its divisors is an integer number (16933210786).

Almost surely, 2^67727378071 is an apocalyptic number.

67727378071 is a deficient number, since it is larger than the sum of its proper divisors (5465073).

67727378071 is a wasteful number, since it uses less digits than its factorization.

67727378071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465072.

The product of its (nonzero) digits is 4840416, while the sum is 55.

The spelling of 67727378071 in words is "sixty-seven billion, seven hundred twenty-seven million, three hundred seventy-eight thousand, seventy-one".