67286446081 has 16 divisors (see below), whose sum is σ = 71054300800. Its totient is φ = 63541584000.

The previous prime is 67286446079. The next prime is 67286446093. The reversal of 67286446081 is 18064468276.

It is a cyclic number.

It is not a de Polignac number, because 67286446081 - 2¹ = 67286446079 is a prime.

It is a super-2 number, since 2×67286446081² (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 (67286446021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8091916 + ... + 8100226.

It is an arithmetic number, because the mean of its divisors is an integer number (4440893800).

Almost surely, 2^67286446081 is an apocalyptic number.

It is an amenable number.

67286446081 is a deficient number, since it is larger than the sum of its proper divisors (3767854719).

67286446081 is a wasteful number, since it uses less digits than its factorization.

67286446081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 67286446081 in words is "sixty-seven billion, two hundred eighty-six million, four hundred forty-six thousand, eighty-one".