646077453366641 has 24 divisors (see below), whose sum is σ = 675425319468480. Its totient is φ = 617815011355200.

The previous prime is 646077453366623. The next prime is 646077453366727. The reversal of 646077453366641 is 146663354770646.

646077453366641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646077453366641 - 2⁶ = 646077453366577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646077453366841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340796831 + ... + 342687371.

It is an arithmetic number, because the mean of its divisors is an integer number (28142721644520).

Almost surely, 2^{646077453366641} is an apocalyptic number.

It is an amenable number.

646077453366641 is a deficient number, since it is larger than the sum of its proper divisors (29347866101839).

646077453366641 is a wasteful number, since it uses less digits than its factorization.

646077453366641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894905 (or 1894868 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 68.

The spelling of 646077453366641 in words is "six hundred forty-six trillion, seventy-seven billion, four hundred fifty-three million, three hundred sixty-six thousand, six hundred forty-one".