14756568821 has 2 divisors, whose sum is σ = 14756568822. Its totient is φ = 14756568820.

The previous prime is 14756568763. The next prime is 14756568847. The reversal of 14756568821 is 12886565741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14602063921 + 154504900 = 120839^2 + 12430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14756568821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14756568851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7378284410 + 7378284411.

It is an arithmetic number, because the mean of its divisors is an integer number (7378284411).

Almost surely, 2^14756568821 is an apocalyptic number.

It is an amenable number.

14756568821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14756568821 is an equidigital number, since it uses as much as digits as its factorization.

14756568821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 53.

The spelling of 14756568821 in words is "fourteen billion, seven hundred fifty-six million, five hundred sixty-eight thousand, eight hundred twenty-one".