11015868816 has 30 divisors (see below), whose sum is σ = 30829133270. Its totient is φ = 3671956224.

The previous prime is 11015868769. The next prime is 11015868827. The reversal of 11015868816 is 61886851011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10209081600 + 806787216 = 101040^2 + 28404^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38249401 + ... + 38249688.

Almost surely, 2^11015868816 is an apocalyptic number.

11015868816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11015868816 is an abundant number, since it is smaller than the sum of its proper divisors (19813264454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11015868816 is a wasteful number, since it uses less digits than its factorization.

11015868816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76499103 (or 76499094 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 45.

The spelling of 11015868816 in words is "eleven billion, fifteen million, eight hundred sixty-eight thousand, eight hundred sixteen".