10561788216 has 48 divisors (see below), whose sum is σ = 32691250800. Its totient is φ = 3017653632.

The previous prime is 10561788173. The next prime is 10561788239. The reversal of 10561788216 is 61288716501.

10561788216 is a `hidden beast` number, since 1 + 0 + 5 + 617 + 8 + 8 + 21 + 6 = 666.

It is a super-2 number, since 2×10561788216² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10477461 + ... + 10478468.

It is an arithmetic number, because the mean of its divisors is an integer number (681067725).

Almost surely, 2^10561788216 is an apocalyptic number.

It is an amenable number.

10561788216 is an abundant number, since it is smaller than the sum of its proper divisors (22129462584).

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

10561788216 is a wasteful number, since it uses less digits than its factorization.

10561788216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20955948 (or 20955941 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 10561788216 in words is "ten billion, five hundred sixty-one million, seven hundred eighty-eight thousand, two hundred sixteen".