11216893572 has 36 divisors (see below), whose sum is σ = 28477651020. Its totient is φ = 3722634432.

The previous prime is 11216893549. The next prime is 11216893579. The reversal of 11216893572 is 27539861211.

11216893572 is a `hidden beast` number, since 1 + 1 + 216 + 89 + 357 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4436359236 + 6780534336 = 66606^2 + 82344^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (11216893579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672063 + ... + 688550.

Almost surely, 2^11216893572 is an apocalyptic number.

11216893572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11216893572 is an abundant number, since it is smaller than the sum of its proper divisors (17260757448).

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

11216893572 is a wasteful number, since it uses less digits than its factorization.

11216893572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360852 (or 1360847 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 11216893572 in words is "eleven billion, two hundred sixteen million, eight hundred ninety-three thousand, five hundred seventy-two".