11081511206 has 4 divisors (see below), whose sum is σ = 16622266812. Its totient is φ = 5540755602.

The previous prime is 11081511187. The next prime is 11081511247. The reversal of 11081511206 is 60211518011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60211518011 = 68711 ⋅876301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770377800 + ... + 2770377803.

It is an arithmetic number, because the mean of its divisors is an integer number (4155566703).

Almost surely, 2^11081511206 is an apocalyptic number.

11081511206 is a deficient number, since it is larger than the sum of its proper divisors (5540755606).

11081511206 is an equidigital number, since it uses as much as digits as its factorization.

11081511206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540755605.

The product of its (nonzero) digits is 480, while the sum is 26.

The spelling of 11081511206 in words is "eleven billion, eighty-one million, five hundred eleven thousand, two hundred six".