1366158085353 has 6 divisors (see below), whose sum is σ = 1973339456634. Its totient is φ = 910772056896.

The previous prime is 1366158085349. The next prime is 1366158085363. The reversal of 1366158085353 is 3535808516631.

1366158085353 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 1 + 580 + 8 + 5 + 3 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1365525462249 + 632623104 = 1168557^2 + 25152^2 .

It is not a de Polignac number, because 1366158085353 - 2² = 1366158085349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1366158085353.

It is not an unprimeable number, because it can be changed into a prime (1366158085363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75897671400 + ... + 75897671417.

It is an arithmetic number, because the mean of its divisors is an integer number (328889909439).

Almost surely, 2^{1366158085353} is an apocalyptic number.

It is an amenable number.

1366158085353 is a deficient number, since it is larger than the sum of its proper divisors (607181371281).

1366158085353 is a wasteful number, since it uses less digits than its factorization.

1366158085353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151795342823 (or 151795342820 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 1366158085353 in words is "one trillion, three hundred sixty-six billion, one hundred fifty-eight million, eighty-five thousand, three hundred fifty-three".