1426005666247 has 8 divisors (see below), whose sum is σ = 1436927191920. Its totient is φ = 1415084686080.

The previous prime is 1426005666227. The next prime is 1426005666263. The reversal of 1426005666247 is 7426665006241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1426005666247 - 2¹⁹ = 1426005141959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1426005666247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426005666227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6253143 + ... + 6477175.

It is an arithmetic number, because the mean of its divisors is an integer number (179615898990).

Almost surely, 2^{1426005666247} is an apocalyptic number.

1426005666247 is a deficient number, since it is larger than the sum of its proper divisors (10921525673).

1426005666247 is a wasteful number, since it uses less digits than its factorization.

1426005666247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272753.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 1426005666247 in words is "one trillion, four hundred twenty-six billion, five million, six hundred sixty-six thousand, two hundred forty-seven".