11216609570 has 16 divisors (see below), whose sum is σ = 20735570808. Its totient is φ = 4365383040.

The previous prime is 11216609527. The next prime is 11216609603. The reversal of 11216609570 is 7590661211.

It can be written as a sum of positive squares in 4 ways, for example, as 11034872209 + 181737361 = 105047^2 + 13481^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15157211 + ... + 15157950.

Almost surely, 2^11216609570 is an apocalyptic number.

11216609570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11216609570 is a deficient number, since it is larger than the sum of its proper divisors (9518961238).

11216609570 is a wasteful number, since it uses less digits than its factorization.

11216609570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30315205.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 11216609570 in words is "eleven billion, two hundred sixteen million, six hundred nine thousand, five hundred seventy".