64663215366354 has 128 divisors (see below), whose sum is σ = 149539818055680. Its totient is φ = 18422847206400.

The previous prime is 64663215366331. The next prime is 64663215366359. The reversal of 64663215366354 is 45366351236646.

It is not an unprimeable number, because it can be changed into a prime (64663215366359) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7208023089 + ... + 7208032059.

It is an arithmetic number, because the mean of its divisors is an integer number (1168279828560).

Almost surely, 2^{64663215366354} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64663215366354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74769909027840).

64663215366354 is an abundant number, since it is smaller than the sum of its proper divisors (84876602689326).

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

64663215366354 is a wasteful number, since it uses less digits than its factorization.

64663215366354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15056.

The product of its digits is 167961600, while the sum is 60.

The spelling of 64663215366354 in words is "sixty-four trillion, six hundred sixty-three billion, two hundred fifteen million, three hundred sixty-six thousand, three hundred fifty-four".