564544445465 has 128 divisors (see below), whose sum is σ = 923419284480. Its totient is φ = 319947264000.

The previous prime is 564544445453. The next prime is 564544445527.

564544445465 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 564544445465 - 2¹² = 564544441369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564544445465.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 99581651 + ... + 99587319.

It is an arithmetic number, because the mean of its divisors is an integer number (7214213160).

Almost surely, 2^564544445465 is an apocalyptic number.

564544445465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

564544445465 is a deficient number, since it is larger than the sum of its proper divisors (358874839015).

564544445465 is a wasteful number, since it uses less digits than its factorization.

564544445465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003.

The product of its digits is 92160000, while the sum is 56.

The spelling of 564544445465 in words is "five hundred sixty-four billion, five hundred forty-four million, four hundred forty-five thousand, four hundred sixty-five".