1361671213599 has 24 divisors (see below), whose sum is σ = 1980647952192. Its totient is φ = 901431236160.

The previous prime is 1361671213523. The next prime is 1361671213631. The reversal of 1361671213599 is 9953121761631.

1361671213599 is a `hidden beast` number, since 1 + 3 + 6 + 167 + 121 + 359 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1361671213599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361671213519) 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 23 ways as a sum of consecutive naturals, for example, 485482 + ... + 1720184.

It is an arithmetic number, because the mean of its divisors is an integer number (82526998008).

Almost surely, 2^{1361671213599} is an apocalyptic number.

1361671213599 is a deficient number, since it is larger than the sum of its proper divisors (618976738593).

1361671213599 is a wasteful number, since it uses less digits than its factorization.

1361671213599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235567 (or 1235564 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The spelling of 1361671213599 in words is "one trillion, three hundred sixty-one billion, six hundred seventy-one million, two hundred thirteen thousand, five hundred ninety-nine".