67406804081 has 4 divisors (see below), whose sum is σ = 67510988352. Its totient is φ = 67302619812.

The previous prime is 67406804077. The next prime is 67406804083. The reversal of 67406804081 is 18040860476.

67406804081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67406804081 - 2² = 67406804077 is a prime.

It is a super-2 number, since 2×67406804081² (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 (67406804083) 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, 52091165 + ... + 52092458.

It is an arithmetic number, because the mean of its divisors is an integer number (16877747088).

Almost surely, 2^67406804081 is an apocalyptic number.

It is an amenable number.

67406804081 is a deficient number, since it is larger than the sum of its proper divisors (104184271).

67406804081 is a wasteful number, since it uses less digits than its factorization.

67406804081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104184270.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 67406804081 in words is "sixty-seven billion, four hundred six million, eight hundred four thousand, eighty-one".