67151367081 has 12 divisors (see below), whose sum is σ = 99617944452. Its totient is φ = 43557643296.

The previous prime is 67151367071. The next prime is 67151367083. The reversal of 67151367081 is 18076315176.

67151367081 is a `hidden beast` number, since 6 + 71 + 513 + 67 + 0 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56653520400 + 10497846681 = 238020^2 + 102459^2 .

It is not a de Polignac number, because 67151367081 - 2¹⁹ = 67150842793 is a prime.

It is a super-2 number, since 2×67151367081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67151367083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100827546 + ... + 100828211.

It is an arithmetic number, because the mean of its divisors is an integer number (8301495371).

Almost surely, 2^67151367081 is an apocalyptic number.

It is an amenable number.

67151367081 is a deficient number, since it is larger than the sum of its proper divisors (32466577371).

67151367081 is a wasteful number, since it uses less digits than its factorization.

67151367081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201655800 (or 201655797 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 67151367081 in words is "sixty-seven billion, one hundred fifty-one million, three hundred sixty-seven thousand, eighty-one".