1131320778001 has 2 divisors, whose sum is σ = 1131320778002. Its totient is φ = 1131320778000.

The previous prime is 1131320777989. The next prime is 1131320778041. The reversal of 1131320778001 is 1008770231311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979458584976 + 151862193025 = 989676^2 + 389695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131320778001 - 2³⁵ = 1096961039633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131320778041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565660389000 + 565660389001.

It is an arithmetic number, because the mean of its divisors is an integer number (565660389001).

Almost surely, 2^{1131320778001} is an apocalyptic number.

It is an amenable number.

1131320778001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131320778001 is an equidigital number, since it uses as much as digits as its factorization.

1131320778001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 1131320778001 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, seven hundred seventy-eight thousand, one".