67404034081 has 2 divisors, whose sum is σ = 67404034082. Its totient is φ = 67404034080.

The previous prime is 67404034067. The next prime is 67404034129. The reversal of 67404034081 is 18043040476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48964838400 + 18439195681 = 221280^2 + 135791^2 .

It is a cyclic number.

It is not a de Polignac number, because 67404034081 - 2¹³ = 67404025889 is a prime.

It is a super-2 number, since 2×67404034081² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67404034081.

It is not a weakly prime, because it can be changed into another prime (67404038081) 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 as a sum of consecutive naturals, namely, 33702017040 + 33702017041.

It is an arithmetic number, because the mean of its divisors is an integer number (33702017041).

Almost surely, 2^67404034081 is an apocalyptic number.

It is an amenable number.

67404034081 is a deficient number, since it is larger than the sum of its proper divisors (1).

67404034081 is an equidigital number, since it uses as much as digits as its factorization.

67404034081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 67404034081 in words is "sixty-seven billion, four hundred four million, thirty-four thousand, eighty-one".