64561854360 has 192 divisors, whose sum is σ = 202574810880. Its totient is φ = 16458785280.

The previous prime is 64561854359. The next prime is 64561854367. The reversal of 64561854360 is 6345816546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64561854367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10391655 + ... + 10397865.

It is an arithmetic number, because the mean of its divisors is an integer number (1055077140).

Almost surely, 2^64561854360 is an apocalyptic number.

64561854360 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 64561854360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101287405440).

64561854360 is an abundant number, since it is smaller than the sum of its proper divisors (138012956520).

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

64561854360 is a wasteful number, since it uses less digits than its factorization.

64561854360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386 (or 6353 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 64561854360 in words is "sixty-four billion, five hundred sixty-one million, eight hundred fifty-four thousand, three hundred sixty".