11155498639 has 2 divisors, whose sum is σ = 11155498640. Its totient is φ = 11155498638.

The previous prime is 11155498637. The next prime is 11155498667. The reversal of 11155498639 is 93689455111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11155498639 - 2¹ = 11155498637 is a prime.

Together with 11155498637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11155498637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577749319 + 5577749320.

It is an arithmetic number, because the mean of its divisors is an integer number (5577749320).

Almost surely, 2^11155498639 is an apocalyptic number.

11155498639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155498639 is an equidigital number, since it uses as much as digits as its factorization.

11155498639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 52.

The spelling of 11155498639 in words is "eleven billion, one hundred fifty-five million, four hundred ninety-eight thousand, six hundred thirty-nine".