67140043771 has 8 divisors (see below), whose sum is σ = 68107371120. Its totient is φ = 66174003072.

The previous prime is 67140043759. The next prime is 67140043783. The reversal of 67140043771 is 17734004176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67140043759) and next prime (67140043783).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67140043771 - 2⁹ = 67140043259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67140043741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216301 + ... + 425518.

It is an arithmetic number, because the mean of its divisors is an integer number (8513421390).

Almost surely, 2^67140043771 is an apocalyptic number.

67140043771 is a deficient number, since it is larger than the sum of its proper divisors (967327349).

67140043771 is a wasteful number, since it uses less digits than its factorization.

67140043771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643325.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 67140043771 in words is "sixty-seven billion, one hundred forty million, forty-three thousand, seven hundred seventy-one".