64211632188 has 96 divisors (see below), whose sum is σ = 166366351872. Its totient is φ = 19111545600.

The previous prime is 64211632183. The next prime is 64211632207. The reversal of 64211632188 is 88123611246.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64211632183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5977270 + ... + 5988002.

It is an arithmetic number, because the mean of its divisors is an integer number (1732982832).

Almost surely, 2^64211632188 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 64211632188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83183175936).

64211632188 is an abundant number, since it is smaller than the sum of its proper divisors (102154719684).

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

64211632188 is a wasteful number, since it uses less digits than its factorization.

64211632188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555 (or 11553 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The spelling of 64211632188 in words is "sixty-four billion, two hundred eleven million, six hundred thirty-two thousand, one hundred eighty-eight".