11005661616 has 20 divisors (see below), whose sum is σ = 28431292632. Its totient is φ = 3668553856.

The previous prime is 11005661599. The next prime is 11005661627. The reversal of 11005661616 is 61616650011.

It is a super-2 number, since 2×11005661616² (a number of 21 digits) contains 22 as substring.

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, 114642261 + ... + 114642356.

Almost surely, 2^11005661616 is an apocalyptic number.

11005661616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11005661616 is an abundant number, since it is smaller than the sum of its proper divisors (17425631016).

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

11005661616 is a wasteful number, since it uses less digits than its factorization.

11005661616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229284628 (or 229284622 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 11005661616 in words is "eleven billion, five million, six hundred sixty-one thousand, six hundred sixteen".