1361326145603 has 4 divisors (see below), whose sum is σ = 1361383679568. Its totient is φ = 1361268611640.

The previous prime is 1361326145593. The next prime is 1361326145609. The reversal of 1361326145603 is 3065416231631.

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

It is a cyclic number.

It is not a de Polignac number, because 1361326145603 - 2²⁴ = 1361309368387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361326145609) 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 3 ways as a sum of consecutive naturals, for example, 28731476 + ... + 28778817.

It is an arithmetic number, because the mean of its divisors is an integer number (340345919892).

Almost surely, 2^{1361326145603} is an apocalyptic number.

1361326145603 is a deficient number, since it is larger than the sum of its proper divisors (57533965).

1361326145603 is an equidigital number, since it uses as much as digits as its factorization.

1361326145603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57533964.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 1361326145603 in words is "one trillion, three hundred sixty-one billion, three hundred twenty-six million, one hundred forty-five thousand, six hundred three".