1356404443546 has 4 divisors (see below), whose sum is σ = 2034606665322. Its totient is φ = 678202221772.

The previous prime is 1356404443531. The next prime is 1356404443553. The reversal of 1356404443546 is 6453444046531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1177865237025 + 178539206521 = 1085295^2 + 422539^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356404443546.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 339101110885 + ... + 339101110888.

Almost surely, 2^{1356404443546} is an apocalyptic number.

1356404443546 is a deficient number, since it is larger than the sum of its proper divisors (678202221776).

1356404443546 is an equidigital number, since it uses as much as digits as its factorization.

1356404443546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678202221775.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 1356404443546 in words is "one trillion, three hundred fifty-six billion, four hundred four million, four hundred forty-three thousand, five hundred forty-six".