6469440449646 has 16 divisors (see below), whose sum is σ = 12990430228608. Its totient is φ = 2147888595000.

The previous prime is 6469440449621. The next prime is 6469440449657.

6469440449646 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147887090 + ... + 2147890101.

It is an arithmetic number, because the mean of its divisors is an integer number (811901889288).

Almost surely, 2^{6469440449646} is an apocalyptic number.

6469440449646 is an abundant number, since it is smaller than the sum of its proper divisors (6520989778962).

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

6469440449646 is a wasteful number, since it uses less digits than its factorization.

6469440449646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295777447.

The product of its (nonzero) digits is 429981696, while the sum is 66.

The spelling of 6469440449646 in words is "six trillion, four hundred sixty-nine billion, four hundred forty million, four hundred forty-nine thousand, six hundred forty-six".