64213884432 has 160 divisors (see below), whose sum is σ = 195738364800. Its totient is φ = 20098326528.

The previous prime is 64213884431. The next prime is 64213884487. The reversal of 64213884432 is 23448831246.

It is a happy number.

64213884432 is a `hidden beast` number, since 6 + 4 + 2 + 138 + 84 + 432 = 666.

64213884432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (64213884431) 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, 892888 + ... + 962120.

It is an arithmetic number, because the mean of its divisors is an integer number (1223364780).

Almost surely, 2^64213884432 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 64213884432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97869182400).

64213884432 is an abundant number, since it is smaller than the sum of its proper divisors (131524480368).

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

64213884432 is a wasteful number, since it uses less digits than its factorization.

64213884432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69382 (or 69370 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The spelling of 64213884432 in words is "sixty-four billion, two hundred thirteen million, eight hundred eighty-four thousand, four hundred thirty-two".