1361206103506 has 32 divisors (see below), whose sum is σ = 2098198550448. Its totient is φ = 661912872960.

The previous prime is 1361206103503. The next prime is 1361206103533. The reversal of 1361206103506 is 6053016021631.

It can be written as a sum of positive squares in 8 ways, for example, as 582002677881 + 779203425625 = 762891^2 + 882725^2 .

It is not an unprimeable number, because it can be changed into a prime (1361206103501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73917156 + ... + 73935568.

Almost surely, 2^{1361206103506} is an apocalyptic number.

1361206103506 is a deficient number, since it is larger than the sum of its proper divisors (736992446942).

1361206103506 is a wasteful number, since it uses less digits than its factorization.

1361206103506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21246.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 1361206103506 in words is "one trillion, three hundred sixty-one billion, two hundred six million, one hundred three thousand, five hundred six".