16241567621 has 2 divisors, whose sum is σ = 16241567622. Its totient is φ = 16241567620.

The previous prime is 16241567611. The next prime is 16241567623. The reversal of 16241567621 is 12676514261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13511505121 + 2730062500 = 116239^2 + 52250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16241567621 is a prime.

Together with 16241567623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16241567623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8120783810 + 8120783811.

It is an arithmetic number, because the mean of its divisors is an integer number (8120783811).

Almost surely, 2^16241567621 is an apocalyptic number.

It is an amenable number.

16241567621 is a deficient number, since it is larger than the sum of its proper divisors (1).

16241567621 is an equidigital number, since it uses as much as digits as its factorization.

16241567621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The spelling of 16241567621 in words is "sixteen billion, two hundred forty-one million, five hundred sixty-seven thousand, six hundred twenty-one".