64854220032 has 216 divisors, whose sum is σ = 214305518336. Its totient is φ = 18477600768.

The previous prime is 64854220027. The next prime is 64854220033. The reversal of 64854220032 is 23002245846.

64854220032 is a `hidden beast` number, since 64 + 8 + 542 + 20 + 0 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64854220033) 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 23 ways as a sum of consecutive naturals, for example, 5913498 + ... + 5924454.

Almost surely, 2^64854220032 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 64854220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107152759168).

64854220032 is an abundant number, since it is smaller than the sum of its proper divisors (149451298304).

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

64854220032 is a wasteful number, since it uses less digits than its factorization.

64854220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11353 (or 11336 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 64854220032 its reverse (23002245846), we get a palindrome (87856465878).

The spelling of 64854220032 in words is "sixty-four billion, eight hundred fifty-four million, two hundred twenty thousand, thirty-two".