67646063426466 has 64 divisors (see below), whose sum is σ = 155182063373568. Its totient is φ = 19257139335168.

The previous prime is 67646063426449. The next prime is 67646063426573. The reversal of 67646063426466 is 66462436064676.

It is a happy number.

67646063426466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 67646063426397 and 67646063426406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636477906 + ... + 636584178.

It is an arithmetic number, because the mean of its divisors is an integer number (2424719740212).

Almost surely, 2^{67646063426466} is an apocalyptic number.

67646063426466 is an abundant number, since it is smaller than the sum of its proper divisors (87535999947102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67646063426466 is a wasteful number, since it uses less digits than its factorization.

67646063426466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161275.

The product of its (nonzero) digits is 752467968, while the sum is 66.

The spelling of 67646063426466 in words is "sixty-seven trillion, six hundred forty-six billion, sixty-three million, four hundred twenty-six thousand, four hundred sixty-six".