11212768816 has 20 divisors (see below), whose sum is σ = 21753310824. Its totient is φ = 5599011200.

The previous prime is 11212768781. The next prime is 11212768837. The reversal of 11212768816 is 61886721211.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448270 + ... + 472621.

Almost surely, 2^11212768816 is an apocalyptic number.

11212768816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11212768816 is a deficient number, since it is larger than the sum of its proper divisors (10540542008).

11212768816 is an equidigital number, since it uses as much as digits as its factorization.

11212768816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921660 (or 921654 counting only the distinct ones).

The product of its digits is 64512, while the sum is 43.

The spelling of 11212768816 in words is "eleven billion, two hundred twelve million, seven hundred sixty-eight thousand, eight hundred sixteen".