14728447457 has 2 divisors, whose sum is σ = 14728447458. Its totient is φ = 14728447456.

The previous prime is 14728447451. The next prime is 14728447511. The reversal of 14728447457 is 75474482741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12714592081 + 2013855376 = 112759^2 + 44876^2 .

It is a cyclic number.

It is not a de Polignac number, because 14728447457 - 2¹⁰ = 14728446433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14728447399 and 14728447408.

It is not a weakly prime, because it can be changed into another prime (14728447451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7364223728 + 7364223729.

It is an arithmetic number, because the mean of its divisors is an integer number (7364223729).

Almost surely, 2^14728447457 is an apocalyptic number.

It is an amenable number.

14728447457 is a deficient number, since it is larger than the sum of its proper divisors (1).

14728447457 is an equidigital number, since it uses as much as digits as its factorization.

14728447457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7024640, while the sum is 53.

The spelling of 14728447457 in words is "fourteen billion, seven hundred twenty-eight million, four hundred forty-seven thousand, four hundred fifty-seven".