64240481280 has 352 divisors, whose sum is σ = 219081010176. Its totient is φ = 16010182656.

The previous prime is 64240481237. The next prime is 64240481299. The reversal of 64240481280 is 8218404246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40995057 + ... + 40996623.

Almost surely, 2^64240481280 is an apocalyptic number.

64240481280 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 64240481280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109540505088).

64240481280 is an abundant number, since it is smaller than the sum of its proper divisors (154840528896).

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

64240481280 is a wasteful number, since it uses less digits than its factorization.

64240481280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 39.

The spelling of 64240481280 in words is "sixty-four billion, two hundred forty million, four hundred eighty-one thousand, two hundred eighty".