1361777344773 has 16 divisors (see below), whose sum is σ = 1855326560256. Its totient is φ = 888060501680.

The previous prime is 1361777344771. The next prime is 1361777344793. The reversal of 1361777344773 is 3774437771631.

It is a cyclic number.

It is not a de Polignac number, because 1361777344773 - 2¹ = 1361777344771 is a prime.

It is a super-2 number, since 2×1361777344773² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361777344771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2317161 + ... + 2844782.

It is an arithmetic number, because the mean of its divisors is an integer number (115957910016).

Almost surely, 2^{1361777344773} is an apocalyptic number.

It is an amenable number.

1361777344773 is a deficient number, since it is larger than the sum of its proper divisors (493549215483).

1361777344773 is a wasteful number, since it uses less digits than its factorization.

1361777344773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163864.

The product of its digits is 43563744, while the sum is 60.

The spelling of 1361777344773 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, three hundred forty-four thousand, seven hundred seventy-three".