1099979546879 has 2 divisors, whose sum is σ = 1099979546880. Its totient is φ = 1099979546878.

The previous prime is 1099979546851. The next prime is 1099979546947. The reversal of 1099979546879 is 9786459799901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1099979546879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1099979546797 and 1099979546806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099979546279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549989773439 + 549989773440.

It is an arithmetic number, because the mean of its divisors is an integer number (549989773440).

Almost surely, 2^{1099979546879} is an apocalyptic number.

1099979546879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099979546879 is an equidigital number, since it uses as much as digits as its factorization.

1099979546879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2777664960, while the sum is 83.

The spelling of 1099979546879 in words is "one trillion, ninety-nine billion, nine hundred seventy-nine million, five hundred forty-six thousand, eight hundred seventy-nine".