1091012823359 has 4 divisors (see below), whose sum is σ = 1091695988904. Its totient is φ = 1090329657816.

The previous prime is 1091012823349. The next prime is 1091012823377. The reversal of 1091012823359 is 9533282101901.

It is a happy number.

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 1091012823359 - 2¹² = 1091012819263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091012823349) 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, 341580377 + ... + 341583570.

It is an arithmetic number, because the mean of its divisors is an integer number (272923997226).

Almost surely, 2^{1091012823359} is an apocalyptic number.

1091012823359 is a deficient number, since it is larger than the sum of its proper divisors (683165545).

1091012823359 is an equidigital number, since it uses as much as digits as its factorization.

1091012823359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683165544.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 1091012823359 in words is "one trillion, ninety-one billion, twelve million, eight hundred twenty-three thousand, three hundred fifty-nine".