1099253306891 has 2 divisors, whose sum is σ = 1099253306892. Its totient is φ = 1099253306890.

The previous prime is 1099253306803. The next prime is 1099253306929. The reversal of 1099253306891 is 1986033529901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099253306891 - 2¹⁴ = 1099253290507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099253356891) 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, 549626653445 + 549626653446.

It is an arithmetic number, because the mean of its divisors is an integer number (549626653446).

Almost surely, 2^{1099253306891} is an apocalyptic number.

1099253306891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099253306891 is an equidigital number, since it uses as much as digits as its factorization.

1099253306891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The spelling of 1099253306891 in words is "one trillion, ninety-nine billion, two hundred fifty-three million, three hundred six thousand, eight hundred ninety-one".