1361205552503 has 8 divisors (see below), whose sum is σ = 1385522640816. Its totient is φ = 1336953052800.

The previous prime is 1361205552463. The next prime is 1361205552547. The reversal of 1361205552503 is 3052555021631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361205552503 - 2⁸ = 1361205552247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361205552593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16104626 + ... + 16188927.

It is an arithmetic number, because the mean of its divisors is an integer number (173190330102).

Almost surely, 2^{1361205552503} is an apocalyptic number.

1361205552503 is a deficient number, since it is larger than the sum of its proper divisors (24317088313).

1361205552503 is an equidigital number, since it uses as much as digits as its factorization.

1361205552503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32294305.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 1361205552503 in words is "one trillion, three hundred sixty-one billion, two hundred five million, five hundred fifty-two thousand, five hundred three".