1366160553405 has 32 divisors (see below), whose sum is σ = 2429213068800. Its totient is φ = 728474003136.

The previous prime is 1366160553389. The next prime is 1366160553409. The reversal of 1366160553405 is 5043550616631.

It is a happy number.

1366160553405 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 1 + 605 + 5 + 34 + 0 + 5 = 666.

It is not a de Polignac number, because 1366160553405 - 2⁴ = 1366160553389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366160553409) 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 31 ways as a sum of consecutive naturals, for example, 323874 + ... + 1684403.

It is an arithmetic number, because the mean of its divisors is an integer number (75912908400).

Almost surely, 2^{1366160553405} is an apocalyptic number.

1366160553405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1366160553405 is a deficient number, since it is larger than the sum of its proper divisors (1063052515395).

1366160553405 is a wasteful number, since it uses less digits than its factorization.

1366160553405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013330 (or 2013324 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 1366160553405 in words is "one trillion, three hundred sixty-six billion, one hundred sixty million, five hundred fifty-three thousand, four hundred five".