64221166000 has 160 divisors (see below), whose sum is σ = 160016740416. Its totient is φ = 24917760000.

The previous prime is 64221165997. The next prime is 64221166019. The reversal of 64221166000 is 66112246.

It is a self number, because there is not a number n which added to its sum of digits gives 64221166000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8902395 + ... + 8909605.

Almost surely, 2^64221166000 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 64221166000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80008370208).

64221166000 is an abundant number, since it is smaller than the sum of its proper divisors (95795574416).

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

64221166000 is a wasteful number, since it uses less digits than its factorization.

64221166000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368 (or 7352 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 64221166000 its reverse (66112246), we get a palindrome (64287278246).

The spelling of 64221166000 in words is "sixty-four billion, two hundred twenty-one million, one hundred sixty-six thousand".