64450544505446 has 16 divisors (see below), whose sum is σ = 105464654318160. Its totient is φ = 29295666785280.

The previous prime is 64450544505443. The next prime is 64450544505463.

64450544505446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64450544505391 and 64450544505400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64450544505443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28386170 + ... + 30572466.

It is an arithmetic number, because the mean of its divisors is an integer number (6591540894885).

Almost surely, 2^{64450544505446} is an apocalyptic number.

64450544505446 is a deficient number, since it is larger than the sum of its proper divisors (41014109812714).

64450544505446 is a wasteful number, since it uses less digits than its factorization.

64450544505446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526279.

The product of its (nonzero) digits is 92160000, while the sum is 56.

The spelling of 64450544505446 in words is "sixty-four trillion, four hundred fifty billion, five hundred forty-four million, five hundred five thousand, four hundred forty-six".