1361775578379 has 16 divisors (see below), whose sum is σ = 1927526326272. Its totient is φ = 852216476288.

The previous prime is 1361775578351. The next prime is 1361775578407. The reversal of 1361775578379 is 9738755771631.

It is an interprime number because it is at equal distance from previous prime (1361775578351) and next prime (1361775578407).

It is a cyclic number.

It is not a de Polignac number, because 1361775578379 - 2²⁸ = 1361507142923 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1361775578329) 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 15 ways as a sum of consecutive naturals, for example, 34838799 + ... + 34877864.

It is an arithmetic number, because the mean of its divisors is an integer number (120470395392).

Almost surely, 2^{1361775578379} is an apocalyptic number.

1361775578379 is a deficient number, since it is larger than the sum of its proper divisors (565750747893).

1361775578379 is a wasteful number, since it uses less digits than its factorization.

1361775578379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69717066.

The product of its digits is 233377200, while the sum is 69.

The spelling of 1361775578379 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-five million, five hundred seventy-eight thousand, three hundred seventy-nine".