1091246980559 has 4 divisors (see below), whose sum is σ = 1091949652416. Its totient is φ = 1090544308704.

The previous prime is 1091246980553. The next prime is 1091246980591. The reversal of 1091246980559 is 9550896421901.

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 1091246980559 - 2⁸ = 1091246980303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1091246980498 and 1091246980507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091246980553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351333599 + ... + 351336704.

It is an arithmetic number, because the mean of its divisors is an integer number (272987413104).

Almost surely, 2^{1091246980559} is an apocalyptic number.

1091246980559 is a deficient number, since it is larger than the sum of its proper divisors (702671857).

1091246980559 is an equidigital number, since it uses as much as digits as its factorization.

1091246980559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702671856.

The product of its (nonzero) digits is 6998400, while the sum is 59.

The spelling of 1091246980559 in words is "one trillion, ninety-one billion, two hundred forty-six million, nine hundred eighty thousand, five hundred fifty-nine".