1156316851091 has 4 divisors (see below), whose sum is σ = 1161410758152. Its totient is φ = 1151222944032.

The previous prime is 1156316851087. The next prime is 1156316851093. The reversal of 1156316851091 is 1901586136511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1156316851091 - 2² = 1156316851087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156316851093) 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 3 ways as a sum of consecutive naturals, for example, 2546953190 + ... + 2546953643.

It is an arithmetic number, because the mean of its divisors is an integer number (290352689538).

Almost surely, 2^{1156316851091} is an apocalyptic number.

1156316851091 is a deficient number, since it is larger than the sum of its proper divisors (5093907061).

1156316851091 is an equidigital number, since it uses as much as digits as its factorization.

1156316851091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093907060.

The product of its (nonzero) digits is 194400, while the sum is 47.

The spelling of 1156316851091 in words is "one trillion, one hundred fifty-six billion, three hundred sixteen million, eight hundred fifty-one thousand, ninety-one".