1646411265464 has 128 divisors (see below), whose sum is σ = 3585233387520. Its totient is φ = 694271088000.

The previous prime is 1646411265463. The next prime is 1646411265493. The reversal of 1646411265464 is 4645621146461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646411265461) by changing a digit.

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, 1107202529 + ... + 1107204015.

It is an arithmetic number, because the mean of its divisors is an integer number (28009635840).

Almost surely, 2^{1646411265464} is an apocalyptic number.

1646411265464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1646411265464 is an abundant number, since it is smaller than the sum of its proper divisors (1938822122056).

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

1646411265464 is a wasteful number, since it uses less digits than its factorization.

1646411265464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2805 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 1646411265464 in words is "one trillion, six hundred forty-six billion, four hundred eleven million, two hundred sixty-five thousand, four hundred sixty-four".