64880421000 has 512 divisors, whose sum is σ = 221009817600. Its totient is φ = 15792537600.

The previous prime is 64880420971. The next prime is 64880421007. The reversal of 64880421000 is 12408846.

It is not an unprimeable number, because it can be changed into a prime (64880421007) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 252452872 + ... + 252453128.

It is an arithmetic number, because the mean of its divisors is an integer number (431659800).

Almost surely, 2^64880421000 is an apocalyptic number.

64880421000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64880421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110504908800).

64880421000 is an abundant number, since it is smaller than the sum of its proper divisors (156129396600).

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

64880421000 is a wasteful number, since it uses less digits than its factorization.

64880421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

Adding to 64880421000 its reverse (12408846), we get a palindrome (64892829846).

The spelling of 64880421000 in words is "sixty-four billion, eight hundred eighty million, four hundred twenty-one thousand".