1361254173105 has 32 divisors (see below), whose sum is σ = 2181572870400. Its totient is φ = 724814385152.

The previous prime is 1361254173089. The next prime is 1361254173107. The reversal of 1361254173105 is 5013714521631.

It is a cyclic number.

It is not a de Polignac number, because 1361254173105 - 2⁴ = 1361254173089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1361254173107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25711501 + ... + 25764389.

It is an arithmetic number, because the mean of its divisors is an integer number (68174152200).

Almost surely, 2^{1361254173105} is an apocalyptic number.

1361254173105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361254173105 is a deficient number, since it is larger than the sum of its proper divisors (820318697295).

1361254173105 is a wasteful number, since it uses less digits than its factorization.

1361254173105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55673.

The product of its (nonzero) digits is 75600, while the sum is 39.

Adding to 1361254173105 its reverse (5013714521631), we get a palindrome (6374968694736).

The spelling of 1361254173105 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-four million, one hundred seventy-three thousand, one hundred five".