64216809468 has 108 divisors (see below), whose sum is σ = 189328197240. Its totient is φ = 18299058624.

The previous prime is 64216809457. The next prime is 64216809491. The reversal of 64216809468 is 86490861246.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 620530 + ... + 716582.

Almost surely, 2^64216809468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64216809468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94664098620).

64216809468 is an abundant number, since it is smaller than the sum of its proper divisors (125111387772).

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

64216809468 is a wasteful number, since it uses less digits than its factorization.

64216809468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96456 (or 96444 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 64216809468 in words is "sixty-four billion, two hundred sixteen million, eight hundred nine thousand, four hundred sixty-eight".