1426430645257 has 4 divisors (see below), whose sum is σ = 1427830480080. Its totient is φ = 1425030810436.

The previous prime is 1426430645249. The next prime is 1426430645281. The reversal of 1426430645257 is 7525460346241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1426430645257 - 2³ = 1426430645249 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 1426430645257.

It is not an unprimeable number, because it can be changed into a prime (1426430645207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699915883 + ... + 699917920.

It is an arithmetic number, because the mean of its divisors is an integer number (356957620020).

Almost surely, 2^{1426430645257} is an apocalyptic number.

It is an amenable number.

1426430645257 is a deficient number, since it is larger than the sum of its proper divisors (1399834823).

1426430645257 is a wasteful number, since it uses less digits than its factorization.

1426430645257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399834822.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 1426430645257 in words is "one trillion, four hundred twenty-six billion, four hundred thirty million, six hundred forty-five thousand, two hundred fifty-seven".