565420061645 has 16 divisors (see below), whose sum is σ = 702656478000. Its totient is φ = 436268034048.

The previous prime is 565420061629. The next prime is 565420061663. The reversal of 565420061645 is 546160024565.

It can be written as a sum of positive squares in 8 ways, for example, as 89819490601 + 475600571044 = 299699^2 + 689638^2 .

It is not a de Polignac number, because 565420061645 - 2⁴ = 565420061629 is a prime.

It is a super-3 number, since 3×565420061645³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 565420061596 and 565420061605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1964030 + ... + 2233439.

It is an arithmetic number, because the mean of its divisors is an integer number (43916029875).

Almost surely, 2^565420061645 is an apocalyptic number.

It is an amenable number.

565420061645 is a deficient number, since it is larger than the sum of its proper divisors (137236416355).

565420061645 is a wasteful number, since it uses less digits than its factorization.

565420061645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198432.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 565420061645 in words is "five hundred sixty-five billion, four hundred twenty million, sixty-one thousand, six hundred forty-five".