1091012819263 has 2 divisors, whose sum is σ = 1091012819264. Its totient is φ = 1091012819262.

The previous prime is 1091012819159. The next prime is 1091012819291. The reversal of 1091012819263 is 3629182101901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091012819263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091012811263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545506409631 + 545506409632.

It is an arithmetic number, because the mean of its divisors is an integer number (545506409632).

Almost surely, 2^{1091012819263} is an apocalyptic number.

1091012819263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091012819263 is an equidigital number, since it uses as much as digits as its factorization.

1091012819263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 1091012819263 in words is "one trillion, ninety-one billion, twelve million, eight hundred nineteen thousand, two hundred sixty-three".