67040744071 has 4 divisors (see below), whose sum is σ = 76617993232. Its totient is φ = 57463494912.

The previous prime is 67040744041. The next prime is 67040744101. The reversal of 67040744071 is 17044704076.

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

It is an interprime number because it is at equal distance from previous prime (67040744041) and next prime (67040744101).

It is a cyclic number.

It is not a de Polignac number, because 67040744071 - 2⁷ = 67040743943 is a prime.

It is a super-2 number, since 2×67040744071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67040744041) 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, 4788624570 + ... + 4788624583.

It is an arithmetic number, because the mean of its divisors is an integer number (19154498308).

Almost surely, 2^67040744071 is an apocalyptic number.

67040744071 is a deficient number, since it is larger than the sum of its proper divisors (9577249161).

67040744071 is an equidigital number, since it uses as much as digits as its factorization.

67040744071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577249160.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 67040744071 in words is "sixty-seven billion, forty million, seven hundred forty-four thousand, seventy-one".