67771945043 has 4 divisors (see below), whose sum is σ = 73933030968. Its totient is φ = 61610859120.

The previous prime is 67771945013. The next prime is 67771945049. The reversal of 67771945043 is 34054917776.

It is a happy number.

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 67771945043 - 2¹⁴ = 67771928659 is a prime.

It is a super-2 number, since 2×67771945043² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67771945049) 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 3 ways as a sum of consecutive naturals, for example, 3080542946 + ... + 3080542967.

It is an arithmetic number, because the mean of its divisors is an integer number (18483257742).

Almost surely, 2^67771945043 is an apocalyptic number.

67771945043 is a deficient number, since it is larger than the sum of its proper divisors (6161085925).

67771945043 is a wasteful number, since it uses less digits than its factorization.

67771945043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161085924.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 67771945043 in words is "sixty-seven billion, seven hundred seventy-one million, nine hundred forty-five thousand, forty-three".