1359623554561 has 4 divisors (see below), whose sum is σ = 1359663996672. Its totient is φ = 1359583112452.

The previous prime is 1359623554529. The next prime is 1359623554579. The reversal of 1359623554561 is 1654553269531.

It is a happy number.

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 1359623554561 - 2⁵ = 1359623554529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1359623554511) 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, 20170585 + ... + 20237878.

It is an arithmetic number, because the mean of its divisors is an integer number (339915999168).

Almost surely, 2^{1359623554561} is an apocalyptic number.

It is an amenable number.

1359623554561 is a deficient number, since it is larger than the sum of its proper divisors (40442111).

1359623554561 is an equidigital number, since it uses as much as digits as its factorization.

1359623554561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40442110.

The product of its digits is 14580000, while the sum is 55.

The spelling of 1359623554561 in words is "one trillion, three hundred fifty-nine billion, six hundred twenty-three million, five hundred fifty-four thousand, five hundred sixty-one".