1356543523457 has 4 divisors (see below), whose sum is σ = 1356547258416. Its totient is φ = 1356539788500.

The previous prime is 1356543523421. The next prime is 1356543523471. The reversal of 1356543523457 is 7543253456531.

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 1356543523457 - 2³² = 1352248556161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1356543523399 and 1356543523408.

It is not an unprimeable number, because it can be changed into a prime (1356543523417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255919 + ... + 2071332.

It is an arithmetic number, because the mean of its divisors is an integer number (339136814604).

Almost surely, 2^{1356543523457} is an apocalyptic number.

It is an amenable number.

1356543523457 is a deficient number, since it is larger than the sum of its proper divisors (3734959).

1356543523457 is an equidigital number, since it uses as much as digits as its factorization.

1356543523457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734958.

The product of its digits is 22680000, while the sum is 53.

Adding to 1356543523457 its reverse (7543253456531), we get a palindrome (8899796979988).

The spelling of 1356543523457 in words is "one trillion, three hundred fifty-six billion, five hundred forty-three million, five hundred twenty-three thousand, four hundred fifty-seven".