64455216500 has 48 divisors (see below), whose sum is σ = 141223170816. Its totient is φ = 25699124000.

The previous prime is 64455216499. The next prime is 64455216509. The reversal of 64455216500 is 561255446.

It is a super-3 number, since 3×64455216500³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64455216509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51752 + ... + 362751.

It is an arithmetic number, because the mean of its divisors is an integer number (2942149392).

Almost surely, 2^64455216500 is an apocalyptic number.

It is an amenable number.

64455216500 is an abundant number, since it is smaller than the sum of its proper divisors (76767954316).

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

64455216500 is a wasteful number, since it uses less digits than its factorization.

64455216500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414833 (or 414821 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 64455216500 in words is "sixty-four billion, four hundred fifty-five million, two hundred sixteen thousand, five hundred".