1428895978723 has 2 divisors, whose sum is σ = 1428895978724. Its totient is φ = 1428895978722.

The previous prime is 1428895978717. The next prime is 1428895978793. The reversal of 1428895978723 is 3278795988241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428895978723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428895978793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714447989361 + 714447989362.

It is an arithmetic number, because the mean of its divisors is an integer number (714447989362).

Almost surely, 2^{1428895978723} is an apocalyptic number.

1428895978723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428895978723 is an equidigital number, since it uses as much as digits as its factorization.

1428895978723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 487710720, while the sum is 73.

The spelling of 1428895978723 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, seven hundred twenty-three".