11015778816 has 160 divisors (see below), whose sum is σ = 37266007680. Its totient is φ = 3147337728.

The previous prime is 11015778733. The next prime is 11015778859. The reversal of 11015778816 is 61887751011.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39850 + ... + 153686.

It is an arithmetic number, because the mean of its divisors is an integer number (232912548).

Almost surely, 2^11015778816 is an apocalyptic number.

11015778816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11015778816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18633003840).

11015778816 is an abundant number, since it is smaller than the sum of its proper divisors (26250228864).

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

11015778816 is an equidigital number, since it uses as much as digits as its factorization.

11015778816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113871 (or 113849 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 45.

The spelling of 11015778816 in words is "eleven billion, fifteen million, seven hundred seventy-eight thousand, eight hundred sixteen".