64204666632 has 128 divisors (see below), whose sum is σ = 189272160000. Its totient is φ = 20096252928.

The previous prime is 64204666579. The next prime is 64204666633. The reversal of 64204666632 is 23666640246.

It is not an unprimeable number, because it can be changed into a prime (64204666633) 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, 1592094 + ... + 1631922.

It is an arithmetic number, because the mean of its divisors is an integer number (1478688750).

Almost surely, 2^64204666632 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 64204666632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94636080000).

64204666632 is an abundant number, since it is smaller than the sum of its proper divisors (125067493368).

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

64204666632 is a wasteful number, since it uses less digits than its factorization.

64204666632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40300 (or 40290 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 64204666632 in words is "sixty-four billion, two hundred four million, six hundred sixty-six thousand, six hundred thirty-two".