6465894985646 has 4 divisors (see below), whose sum is σ = 9698842478472. Its totient is φ = 3232947492822.

The previous prime is 6465894985579. The next prime is 6465894985663.

6465894985646 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616473746410 + ... + 1616473746413.

It is an arithmetic number, because the mean of its divisors is an integer number (2424710619618).

Almost surely, 2^{6465894985646} is an apocalyptic number.

6465894985646 is a deficient number, since it is larger than the sum of its proper divisors (3232947492826).

6465894985646 is a wasteful number, since it uses less digits than its factorization.

6465894985646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232947492825.

The product of its digits is 10749542400, while the sum is 80.

The spelling of 6465894985646 in words is "six trillion, four hundred sixty-five billion, eight hundred ninety-four million, nine hundred eighty-five thousand, six hundred forty-six".