14565617641 has 2 divisors, whose sum is σ = 14565617642. Its totient is φ = 14565617640.

The previous prime is 14565617639. The next prime is 14565617659. The reversal of 14565617641 is 14671656541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11746007641 + 2819610000 = 108379^2 + 53100^2 .

It is an emirp because it is prime and its reverse (14671656541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14565617641 - 2¹ = 14565617639 is a prime.

Together with 14565617639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 14565617591 and 14565617600.

It is not a weakly prime, because it can be changed into another prime (14565617621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7282808820 + 7282808821.

It is an arithmetic number, because the mean of its divisors is an integer number (7282808821).

Almost surely, 2^14565617641 is an apocalyptic number.

It is an amenable number.

14565617641 is a deficient number, since it is larger than the sum of its proper divisors (1).

14565617641 is an equidigital number, since it uses as much as digits as its factorization.

14565617641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 46.

The spelling of 14565617641 in words is "fourteen billion, five hundred sixty-five million, six hundred seventeen thousand, six hundred forty-one".