564434459380 has 96 divisors (see below), whose sum is σ = 1344449715840. Its totient is φ = 197164961280.

The previous prime is 564434459353. The next prime is 564434459383. The reversal of 564434459380 is 83954434465.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564434459383) 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, 1032319 + ... + 1481401.

It is an arithmetic number, because the mean of its divisors is an integer number (14004684540).

Almost surely, 2^564434459380 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 564434459380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672224857920).

564434459380 is an abundant number, since it is smaller than the sum of its proper divisors (780015256460).

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

564434459380 is a wasteful number, since it uses less digits than its factorization.

564434459380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449329 (or 449327 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 55.

The spelling of 564434459380 in words is "five hundred sixty-four billion, four hundred thirty-four million, four hundred fifty-nine thousand, three hundred eighty".