10991315239 has 2 divisors, whose sum is σ = 10991315240. Its totient is φ = 10991315238.

The previous prime is 10991315221. The next prime is 10991315249. The reversal of 10991315239 is 93251319901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10991315239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10991315195 and 10991315204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10991315249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5495657619 + 5495657620.

It is an arithmetic number, because the mean of its divisors is an integer number (5495657620).

Almost surely, 2^10991315239 is an apocalyptic number.

10991315239 is a deficient number, since it is larger than the sum of its proper divisors (1).

10991315239 is an equidigital number, since it uses as much as digits as its factorization.

10991315239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 43.

The spelling of 10991315239 in words is "ten billion, nine hundred ninety-one million, three hundred fifteen thousand, two hundred thirty-nine".