4151454243221 has 8 divisors (see below), whose sum is σ = 4285298639160. Its totient is φ = 4018748948928.

The previous prime is 4151454243151. The next prime is 4151454243239. The reversal of 4151454243221 is 1223424541514.

It can be written as a sum of positive squares in 4 ways, for example, as 2580039062500 + 1571415180721 = 1606250^2 + 1253561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4151454243221 - 2¹⁴ = 4151454226837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4151454245221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284768006 + ... + 284782583.

It is an arithmetic number, because the mean of its divisors is an integer number (535662329895).

Almost surely, 2^{4151454243221} is an apocalyptic number.

It is an amenable number.

4151454243221 is a deficient number, since it is larger than the sum of its proper divisors (133844395939).

4151454243221 is a wasteful number, since it uses less digits than its factorization.

4151454243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569550823.

The product of its digits is 153600, while the sum is 38.

Adding to 4151454243221 its reverse (1223424541514), we get a palindrome (5374878784735).

The spelling of 4151454243221 in words is "four trillion, one hundred fifty-one billion, four hundred fifty-four million, two hundred forty-three thousand, two hundred twenty-one".