1320330783161 has 16 divisors (see below), whose sum is σ = 1442339667216. Its totient is φ = 1201265012736.

The previous prime is 1320330783143. The next prime is 1320330783199. The reversal of 1320330783161 is 1613870330231.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1092025 + 1320329691136 = 1045^2 + 1149056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320330783161 - 2¹⁰ = 1320330782137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320330783361) 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 15 ways as a sum of consecutive naturals, for example, 950921 + ... + 1882793.

It is an arithmetic number, because the mean of its divisors is an integer number (90146229201).

Almost surely, 2^{1320330783161} is an apocalyptic number.

It is an amenable number.

1320330783161 is a deficient number, since it is larger than the sum of its proper divisors (122008884055).

1320330783161 is a wasteful number, since it uses less digits than its factorization.

1320330783161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933452.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 1320330783161 in words is "one trillion, three hundred twenty billion, three hundred thirty million, seven hundred eighty-three thousand, one hundred sixty-one".