4352221340145 has 24 divisors (see below), whose sum is σ = 8621543226816. Its totient is φ = 1989586898208.

The previous prime is 4352221340143. The next prime is 4352221340161. The reversal of 4352221340145 is 5410431222534.

It is a happy number.

4352221340145 is a `hidden beast` number, since 4 + 3 + 52 + 221 + 340 + 1 + 45 = 666.

It is not a de Polignac number, because 4352221340145 - 2¹ = 4352221340143 is a prime.

It is a super-2 number, since 2×4352221340145² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4352221340141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6908287527 + ... + 6908288156.

It is an arithmetic number, because the mean of its divisors is an integer number (359230967784).

Almost surely, 2^{4352221340145} is an apocalyptic number.

4352221340145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4352221340145 is a deficient number, since it is larger than the sum of its proper divisors (4269321886671).

4352221340145 is a wasteful number, since it uses less digits than its factorization.

4352221340145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13816575701 (or 13816575698 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 4352221340145 its reverse (5410431222534), we get a palindrome (9762652562679).

The spelling of 4352221340145 in words is "four trillion, three hundred fifty-two billion, two hundred twenty-one million, three hundred forty thousand, one hundred forty-five".