4221615560 has 16 divisors (see below), whose sum is σ = 9498635100. Its totient is φ = 1688646208.

The previous prime is 4221615539. The next prime is 4221615611. The reversal of 4221615560 is 655161224.

It can be written as a sum of positive squares in 2 ways, for example, as 4043179396 + 178436164 = 63586^2 + 13358^2 .

It is a super-2 number, since 2×4221615560² = 35644075872868227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52770155 + ... + 52770234.

Almost surely, 2^4221615560 is an apocalyptic number.

4221615560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221615560 is an abundant number, since it is smaller than the sum of its proper divisors (5277019540).

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

4221615560 is a wasteful number, since it uses less digits than its factorization.

4221615560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105540400 (or 105540396 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 4221615560 is about 64973.9606303941. The cubic root of 4221615560 is about 1616.1917813515.

Adding to 4221615560 its reverse (655161224), we get a palindrome (4876776784).

The spelling of 4221615560 in words is "four billion, two hundred twenty-one million, six hundred fifteen thousand, five hundred sixty".