1161155265007 has 2 divisors, whose sum is σ = 1161155265008. Its totient is φ = 1161155265006.

The previous prime is 1161155265001. The next prime is 1161155265077. The reversal of 1161155265007 is 7005625511611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161155265007 - 2¹⁵ = 1161155232239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161155265001) 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 as a sum of consecutive naturals, namely, 580577632503 + 580577632504.

It is an arithmetic number, because the mean of its divisors is an integer number (580577632504).

Almost surely, 2^{1161155265007} is an apocalyptic number.

1161155265007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161155265007 is an equidigital number, since it uses as much as digits as its factorization.

1161155265007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 1161155265007 in words is "one trillion, one hundred sixty-one billion, one hundred fifty-five million, two hundred sixty-five thousand, seven".