64064591426880 has 1344 divisors, whose sum is σ = 259715194421760. Its totient is φ = 14827205099520.

The previous prime is 64064591426879. The next prime is 64064591426897. The reversal of 64064591426880 is 8862419546046.

64064591426880 is a `hidden beast` number, since 6 + 4 + 0 + 6 + 45 + 91 + 426 + 8 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14258753914 + ... + 14258758406.

It is an arithmetic number, because the mean of its divisors is an integer number (193240472040).

Almost surely, 2^{64064591426880} is an apocalyptic number.

64064591426880 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 64064591426880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129857597210880).

64064591426880 is an abundant number, since it is smaller than the sum of its proper divisors (195650602994880).

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

64064591426880 is a wasteful number, since it uses less digits than its factorization.

64064591426880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 64064591426880 in words is "sixty-four trillion, sixty-four billion, five hundred ninety-one million, four hundred twenty-six thousand, eight hundred eighty".